NEWS.rst

4.37.1 (released 2022-08-24)

• [subset] Fixed regression introduced with v4.37.0 while subsetting the VarStore of HVAR and VVAR tables, whereby an AttributeError: subset_varidxes was thrown because an apparently unused import statement (with the side-effect of dynamically binding that subset_varidxes method to the VarStore class) had been accidentally deleted in an unrelated PR (#2679, #2773).
• [pens] Added cairoPen (#2678).
• [gvar] Read gvar more lazily by not parsing all of the glyf table (#2771).
• [ttGlyphSet] Make drawPoints(pointPen) method work for CFF fonts as well via adapter pen (#2770).

4.37.0 (released 2022-08-23)

• [varLib.models] Reverted PR #2717 which added support for "narrow tents" in v4.36.0, as it introduced a regression (#2764, #2765). It will be restored in upcoming release once we found a solution to the bug.
• [cff.specializer] Fixed issue in charstring generalizer with the blend operator (#2750, #1975).
• [varLib.models] Added support for extrapolation (#2757).
• [ttGlyphSet] Ensure the newly added _TTVarGlyphSet inherits from _TTGlyphSet to keep backward compatibility with existing API (#2762).
• [kern] Allow compiling legacy kern tables with more than 64k entries (d21cfdede).
• [visitor] Added new visitor API to traverse tree of objects and dispatch based on the attribute type: cf. fontTools.misc.visitor and fontTools.ttLib.ttVisitor. Added fontTools.ttLib.scaleUpem module that uses the latter to change a font's units-per-em and scale all the related fields accordingly (#2718, #2755).

4.36.0 (released 2022-08-17)

• [varLib.models] Use a simpler model that generates narrower "tents" (regions, master supports) whenever possible: specifically when any two axes that actively "cooperate" (have masters at non-zero positions for both axes) have a complete set of intermediates. The simpler algorithm produces fewer overlapping regions and behaves better with respect to rounding at the peak positions than the generic solver, always matching intermediate masters exactly, instead of maximally 0.5 units off. This may be useful when 100% metrics compatibility is desired (#2218, #2717).
• [feaLib] Remove warning when about GDEF not being built when explicitly not requested; don't build one unconditonally even when not requested (#2744, also works around #2747).
• [ttFont] TTFont.getGlyphSet method now supports selecting a location that represents an instance of a variable font (supports both user-scale and normalized axes coordinates via the normalized=False parameter). Currently this only works for TrueType-flavored variable fonts (#2738).

4.35.0 (released 2022-08-15)

• [otData/otConverters] Added support for 'biased' PaintSweepGradient start/end angles to match latest COLRv1 spec (#2743).
• [varLib.instancer] Fixed bug in _instantiateFeatureVariations when at the same time pinning one axis and restricting the range of a subsequent axis; the wrong axis tag was being used in the latter step (as the records' axisIdx was updated in the preceding step but looked up using the old axes order in the following step) (#2733, #2734).
• [mtiLib] Pad script tags with space when less than 4 char long (#1727).
• [merge] Use '.' instead of '#' in duplicate glyph names (#2742).
• [gvar] Added support for lazily loading glyph variations (#2741).
• [varLib] In build_many, we forgot to pass on colr_layer_reuse parameter to the build method (#2730).
• [svgPathPen] Add a main that prints SVG for input text (6df779fd).
• [cffLib.width] Fixed off-by-one in optimized values; previous code didn't match the code block above it (2963fa50).
• [varLib.interpolatable] Support reading .designspace and .glyphs files (via optional glyphsLib).
• Compile some modules with Cython when available and building/installing fonttools from source: varLib.iup (35% faster), pens.momentsPen (makes varLib.interpolatable 3x faster).
• [feaLib] Allow features to be built for VF without also building a GDEF table (e.g. only build GSUB); warn when GDEF would be needed but isn't requested (#2705, 2694).
• [otBase] Fixed AttributeError when uharfbuzz < 0.23.0 and 'repack' method is missing (32aa8eaf). Use new uharfbuzz.repack_with_tag when available (since uharfbuzz>=0.30.0), enables table-specific optimizations to be performed during repacking (#2724).
• [statisticsPen] By default report all glyphs (4139d891). Avoid division-by-zero (52b28f90).
• [feaLib] Added missing required argument to FeatureLibError exception (#2693)
• [varLib.merge] Fixed error during error reporting (#2689). Fixed undefined NotANone variable (#2714).

4.34.4 (released 2022-07-07)

• Fixed typo in varLib/merger.py that causes NameError merging COLR glyphs containing more than 255 layers (#2685).

4.34.3 (released 2022-07-07)

• [designspaceLib] Don't make up bad PS names when no STAT data (#2684)

4.34.2 (released 2022-07-06)

• [varStore/subset] fixed KeyError exception to do with NO_VARIATION_INDEX while subsetting varidxes in GPOS/GDEF (a08140d).

4.34.1 (released 2022-07-06)

• [instancer] When optimizing HVAR/VVAR VarStore, use_NO_VARIATION_INDEX=False to avoid including NO_VARIATION_INDEX in AdvWidthMap, RsbMap, LsbMap mappings, which would push the VarIdx width to maximum (4bytes), which is not desirable. This also fixes a hard crash when attempting to subset a varfont after it had been partially instanced with use_NO_VARIATION_INDEX=True.

4.34.0 (released 2022-07-06)

• [instancer] Set RIBBI bits in head and OS/2 table when cutting instances and the subfamily nameID=2 contains strings like 'Italic' or 'Bold' (#2673).
• [otTraverse] Addded module containing methods for traversing trees of otData tables (#2660).
• [otTables] Made DeltaSetIndexMap TTX dump less verbose by omitting no-op entries (#2660).
• [colorLib.builder] Added option to disable PaintColrLayers's reuse of layers from LayerList (#2660).
• [varLib] Added support for merging multiple master COLRv1 tables into a variable COLR table (#2660, #2328). Base color glyphs of same name in different masters must have identical paint graph structure (incl. number of layers, palette indices, number of color line stops, corresponding paint formats at each level of the graph), but can differ in the variable fields (e.g. PaintSolid.Alpha). PaintVar* tables are produced when this happens and a VarStore/DeltaSetIndexMap is added to the variable COLR table. It is possible for non-default masters to be 'sparse', i.e. omit some of the color glyphs present in the default master.
• [feaLib] Let the Parser set nameIDs 1 through 6 that were previously reserved (#2675).
• [varLib.varStore] Support NO_VARIATION_INDEX in optimizer and instancer.
• [feaLib] Show all missing glyphs at once at end of parsing (#2665).
• [varLib.iup] Rewrite force-set conditions and limit DP loopback length (#2651). For Noto Sans, IUP time drops from 23s down to 9s, with only a slight size increase in the final font. This basically turns the algorithm from O(n^3) into O(n).
• [featureVars] Report about missing glyphs in substitution rules (#2654).
• [mutator/instancer] Added CLI flag to --no-recalc-timestamp (#2649).
• [SVG] Allow individual SVG documents in SVG OT table to be compressed on uncompressed, and remember that when roundtripping to/from ttx. The SVG.docList is now a list of SVGDocument namedtuple-like dataclass containing an extra compressed field, and no longer a bare 3-tuple (#2645).
• [designspaceLib] Check for descriptor types with hasattr() to allow custom classes that don't inherit the default descriptors (#2634).
• [subset] Enable sharing across subtables of extension lookups for harfbuzz packing (#2626). Updated how table packing falls back to fontTools from harfbuzz (#2668).
• [subset] Updated default feature tags following current Harfbuzz (#2637).
• [svgLib] Fixed regex for real number to support e.g. 1e-4 in addition to 1.0e-4. Support parsing negative rx, ry on arc commands (#2596, #2611).
• [subset] Fixed subsetting SinglePosFormat2 when ValueFormat=0 (#2603).

4.33.3 (released 2022-04-26)

• [designspaceLib] Fixed typo in deepcopyExceptFonts method, preventing font references to be transferred (#2600). Fixed another typo in the name of Range dataclass's __post_init__ magic method (#2597).

4.33.2 (released 2022-04-22)

• [otBase] Make logging less verbose when harfbuzz fails to serialize. Do not exit at the first failure but continue attempting to fix offset overflow error using the pure-python serializer even when the USE_HARFBUZZ_REPACKER option was explicitly set to True. This is normal with fonts with relatively large tables, at least until hb.repack implements proper table splitting.

4.33.1 (released 2022-04-22)

• [otlLib] Put back the FONTTOOLS_GPOS_COMPACT_MODE environment variable to fix regression in ufo2ft (and thus fontmake) introduced with v4.33.0 (#2592, #2593). This is deprecated and will be removed one ufo2ft gets updated to use the new config setup.

4.33.0 (released 2022-04-21)

• [OS/2 / merge] Automatically recalculate OS/2.xAvgCharWidth after merging fonts with fontTools.merge (#2591, #2538).
• [misc/config] Added fontTools.misc.configTools module, a generic configuration system (#2416, #2439). Added fontTools.config module, a fontTools-specific configuration system using configTools above. Attached a Config object to TTFont.
• [otlLib] Replaced environment variable for GPOS compression level with an equivalent option using the new config system.
• [designspaceLib] Incremented format version to 5.0 (#2436). Added discrete axes, variable fonts, STAT information, either design- or user-space location on instances. Added fontTools.designspaceLib.split module to split a designspace into sub-spaces that interpolate and that represent the variable fonts listed in the document. Made instance names optional and allow computing them from STAT data instead. Added fontTools.designspaceLib.statNames module. Allow instances to have the same location as a previously defined STAT label. Deprecated some attributes: SourceDescriptor: copyLib, copyInfo, copyGroups, copyFeatures. InstanceDescriptor: kerning, info; glyphs: use rules or sparse sources. For both, location: use the more explicit designLocation. Note: all are soft deprecations and existing code should keep working. Updated documentation for Python methods and the XML format.
• [varLib] Added build_many to build several variable fonts from a single designspace document (#2436). Added fontTools.varLib.stat module to build STAT tables from a designspace document.
• [otBase] Try to use the Harfbuzz Repacker for packing GSUB/GPOS tables when uharfbuzz python bindings are available (#2552). Disable it by setting the "fontTools.ttLib.tables.otBase:USE_HARFBUZZ_REPACKER" config option to False. If the option is set explicitly to True but uharfbuzz can't be imported or fails to serialize for any reasons, an error will be raised (ImportError or uharfbuzz errors).
• [CFF/T2] Ensure that pen.closePath() gets called for CFF2 charstrings (#2577). Handle implicit CFF2 closePath within T2OutlineExtractor (#2580).

4.32.0 (released 2022-04-08)

• [otlLib] Disable GPOS7 optimization to work around bug in Apple CoreText. Always force Chaining GPOS8 for now (#2540).
• [glifLib] Added outputImpliedClosingLine=False parameter to Glyph.draw(), to control behaviour of PointToSegmentPen (6b4e2e7).
• [varLib.interpolatable] Check for wrong contour starting point (#2571).
• [cffLib] Remove leftover GlobalState class and fix calls to TopDictIndex() (#2569, #2570).
• [instancer] Clear AxisValueArray if it is empty after instantiating (#2563).

4.31.2 (released 2022-03-22)

• [varLib] fix instantiation of GPOS SinglePos values (#2555).

4.31.1 (released 2022-03-18)

• [subset] fix subsetting OT-SVG when glyph id attribute is on the root <svg> element (#2553).

4.31.0 (released 2022-03-18)

• [ttCollection] Fixed 'ResourceWarning: unclosed file' warning (#2549).
• [varLib.merger] Handle merging SinglePos with valueformat=0 (#2550).
• [ttFont] Update glyf's glyphOrder when calling TTFont.setGlyphOrder() (#2544).
• [ttFont] Added ensureDecompiled method to load all tables irrespective of the lazy attribute (#2551).
• [otBase] Added iterSubTable method to iterate over BaseTable's children of type BaseTable; useful for traversing a tree of otTables (#2551).

4.30.0 (released 2022-03-10)

• [varLib] Added debug logger showing the glyph name for which gvar is built (#2542).
• [varLib.errors] Fixed undefined names in FoundANone and UnsupportedFormat exceptions (ac4d5611).
• [otlLib.builder] Added windowsNames and macNames (bool) parameters to the buildStatTabe function, so that one can select whether to only add one or both of the two sets (#2528).
• [t1Lib] Added the ability to recreate PostScript stream (#2504).
• [name] Added getFirstDebugName, getBest{Family,SubFamily,Full}Name methods (#2526).

4.29.1 (released 2022-02-01)

• [colorLib] Fixed rounding issue with radial gradient's start/end circles inside one another (#2521).
• [freetypePen] Handle rotate/skew transform when auto-computing width/height of the buffer; raise PenError wen missing moveTo (#2517)

4.29.0 (released 2022-01-24)

• [ufoLib] Fixed illegal characters and expanded reserved filenames (#2506).
• [COLRv1] Don't emit useless PaintColrLayers of lenght=1 in LayerListBuilder (#2513).
• [ttx] Removed legacy waitForKeyPress method on Windows (#2509).
• [pens] Added FreeTypePen that uses freetype-py and the pen protocol for rasterizating outline paths (#2494).
• [unicodedata] Updated the script direction list to Unicode 14.0 (#2484). Bumped unicodedata2 dependency to 14.0 (#2499).
• [psLib] Fixed type of fontName in suckfont (#2496).

4.28.5 (released 2021-12-19)

• [svgPathPen] Continuation of #2471: make sure all occurrences of str() are now replaced with user-defined ntos callable.
• [merge] Refactored code into submodules, plus several bugfixes and improvements: fixed duplicate-glyph-resolution GSUB-lookup generation code; use tolerance in glyph comparison for empty glyph's width; ignore space of default ignorable glyphs; downgrade duplicates-resolution missing-GSUB from assert to warn; added --drop-tables option (#2473, #2475, #2476).

4.28.4 (released 2021-12-15)

• [merge] Merge GDEF marksets in Lookups properly (#2474).
• [feaLib] Have fontTools feaLib script exit with error code when build fails (#2459)
• [svgPathPen] Added ntos option to customize number formatting (e.g. rounding) (#2471).
• [subset] Speed up subsetting of large CFF fonts (#2467).
• [otTables] Speculatively promote lookups to extension to speed up compilation. If the offset to lookup N is too big to fit in a ushort, the offset to lookup N+1 is going to be too big as well, so we promote to extension all lookups from lookup N onwards (#2465).

4.28.3 (released 2021-12-03)

• [subset] Fixed bug while subsetting COLR table, whereby incomplete layer records pointing to missing glyphs were being retained leading to struct.error upon compiling. Make it so that glyf glyph closure, which follows the COLR glyph closure, does not influence the COLR table subsetting (#2461, #2462).
• [docs] Fully document the cmap and glyf tables (#2454, #2457).
• [colorLib.unbuilder] Fixed CLI by deleting no longer existing parameter (180bb1867).

4.28.2 (released 2021-11-22)

• [otlLib] Remove duplicates when building coverage (#2433).
• [docs] Add interrogate configuration (#2443).
• [docs] Remove comment about missing “start” optional argument to calcChecksum (#2448).
• [cu2qu/cli] Adapt to the latest ufoLib2.
• [subset] Support subsetting SVG table and remove it from the list of drop by default tables (#534).
• [subset] add --pretty-svg option to pretty print SVG table contents (#2452).
• [merge] Support merging CFF tables (CID-keyed CFF is still not supported) (#2447).
• [merge] Support --output-file (#2447).
• [docs] Split table docs into individual pages (#2444).
• [feaLib] Forbid empty classes (#2446).
• [docs] Improve documentation for fontTools.ttLib.ttFont (#2442).

4.28.1 (released 2021-11-08)

• [subset] Fixed AttributeError while traversing a color glyph's Paint graph when there is no LayerList, which is optional (#2441).

4.28.0 (released 2021-11-05)

• Dropped support for EOL Python 3.6, require Python 3.7 (#2417).
• [ufoLib/glifLib] Make filename-clash checks faster by using a set instead of a list (#2422).
• [subset] Don't crash if optional ClipList and LayerList are None (empty) (#2424, 2439).
• [OT-SVG] Removed support for old deprecated version 1 and embedded color palettes, which were never officially part of the OpenType SVG spec. Upon compile, reuse offsets to SVG documents that are identical (#2430).
• [feaLib] Added support for Variable Feature File syntax. This is experimental and subject to change until it is finalized in the Adobe FEA spec (#2432).
• [unicodedata] Update Scripts/ScriptExtensions/Blocks to UnicodeData 14.0 (#2437).

4.27.1 (released 2021-09-23)

• [otlLib] Fixed error when chained contextual lookup builder overflows (#2404, #2411).
• [bezierTools] Fixed two floating-point bugs: one when computing t for a point lying on an almost horizontal/vertical line; another when computing the intersection point between a curve and a line (#2413).

4.27.0 (released 2021-09-14)

• [ttLib/otTables] Cleaned up virtual GID handling: allow virtual GIDs in Coverage and ClassDef readers; removed unused allowVID argument from TTFont constructor, and requireReal argument in TTFont.getGlyphID method. Make TTFont.setGlyphOrder clear reverse glyphOrder map, and assume glyphOrder internal attribute is never modified outside setGlyphOrder; added TTFont.getGlyphNameMany and getGlyphIDMany (#1536, #1654, #2334, #2398).
• [py23] Dropped internal use of fontTools.py23 module to fix deprecation warnings in client code that imports from fontTools (#2234, #2399, #2400).
• [subset] Fix subsetting COLRv1 clip boxes when font is loaded lazily (#2408).

4.26.2 (released 2021-08-09)

• [otTables] Added missing CompositeMode.PLUS operator (#2390).

4.26.1 (released 2021-08-03)

• [transform] Added transformVector and transformVectors methods to the Transform class. Similar to transformPoint but ignore the translation part (#2386).

4.26.0 (released 2021-08-03)

• [xmlWriter] Default to "\n" for newlinestr instead of platform-specific os.linesep (#2384).
• [otData] Define COLRv1 ClipList and ClipBox (#2379).
• [removeOverlaps/instancer] Added --ignore-overlap-errors option to work around Skia PathOps.Simplify bug (#2382, #2363, google/fonts#3365).
• NOTE: This will be the last version to support Python 3.6. FontTools will require Python 3.7 or above from the next release (#2350)

4.25.2 (released 2021-07-26)

• [COLRv1] Various changes to sync with the latest CORLv1 draft spec. In particular: define COLR.VarIndexMap, remove/inline ColorIndex struct, add VarIndexBase to PaintVar* tables (#2372); add reduced-precicion specialized transform Paints; define Angle as fraction of half circle encoded as F2Dot14; use FWORD (int16) for all Paint center coordinates; change PaintTransform to have an offset to Affine2x3;
• [ttLib] when importing XML, only set sfntVersion if the font has no reader and is empty (#2376)

4.25.1 (released 2021-07-16)

• [ttGlyphPen] Fixed bug in TTGlyphPointPen, whereby open contours (i.e. starting with segmentType "move") would throw NotImplementedError. They are now treated as if they are closed, like with the TTGlyphPen (#2364, #2366).

4.25.0 (released 2021-07-05)

• [tfmLib] Added new library for parsing TeX Font Metric (TFM) files (#2354).
• [TupleVariation] Make shared tuples order deterministic on python < 3.7 where Counter (subclass of dict) doesn't remember insertion order (#2351, #2353).
• [otData] Renamed COLRv1 structs to remove 'v1' suffix and match the updated draft spec: 'LayerV1List' -> 'LayerList', 'BaseGlyphV1List' -> 'BaseGlyphList', 'BaseGlyphV1Record' -> 'BaseGlyphPaintRecord' (#2346). Added 8 new PaintScale* tables: with/without centers, uniform vs non-uniform. Added *AroundCenter variants to PaintRotate and PaintSkew: the default versions no longer have centerX/Y, but default to origin. PaintRotate, PaintSkew and PaintComposite formats were re-numbered. NOTE: these are breaking changes; clients using the experimental COLRv1 API will have to be updated (#2348).
• [pointPens] Allow GuessSmoothPointPen to accept a tolerance. Fixed call to math.atan2 with x/y parameters inverted. Sync the code with fontPens (#2344).
• [post] Fixed parsing post table format 2.0 when it contains extra garbage at the end of the stringData array (#2314).
• [subset] drop empty features unless 'size' with FeatureParams table (#2324).
• [otlLib] Added otlLib.optimize module; added GPOS compaction algorithm. The compaction can be run on existing fonts with fonttools otlLib.optimize or using the snippet compact_gpos.py. There's experimental support for compacting fonts at compilation time using an environment variable, but that might be removed later (#2326).

4.24.4 (released 2021-05-25)

• [subset/instancer] Fixed AttributeError when instantiating a VF that contains GPOS ValueRecords with Device tables but without the respective non-Device values (e.g. XAdvDevice without XAdvance). When not explicitly set, the latter are assumed to be 0 (#2323).

4.24.3 (released 2021-05-20)

• [otTables] Fixed AttributeError in methods that split LigatureSubst, MultipleSubst and AlternateSubst subtables when an offset overflow occurs. The Format attribute was removed in v4.22.0 (#2319).

4.24.2 (released 2021-05-20)

• [ttGlyphPen] Fixed typing annotation of TTGlyphPen glyphSet parameter (#2315).
• Fixed two instances of DeprecationWarning: invalid escape sequence (#2311).

4.24.1 (released 2021-05-20)

• [subset] Fixed AttributeError when SinglePos subtable has None Value (ValueFormat 0) (#2312, #2313).

4.24.0 (released 2021-05-17)

• [pens] Add ttGlyphPen.TTGlyphPointPen similar to TTGlyphPen (#2205).

4.23.1 (released 2021-05-14)

• [subset] Fix KeyError after subsetting COLR table that initially contains both v0 and v1 color glyphs when the subset only requested v1 glyphs; we were not pruning the v0 portion of the table (#2308).
• [colorLib] Set LayerV1List attribute to None when empty, it's optional in CORLv1 (#2308).

4.23.0 (released 2021-05-13)

• [designspaceLib] Allow to use \\UNC absolute paths on Windows (#2299, #2306).
• [varLib.merger] Fixed bug where VarLibMergeError was raised with incorrect parameters (#2300).
• [feaLib] Allow substituting a glyph class with NULL to delete multiple glyphs (#2303).
• [glyf] Fixed NameError exception in getPhantomPoints (#2295, #2305).
• [removeOverlaps] Retry pathops.simplify after rounding path coordinates to integers if it fails the first time using floats, to work around a rare and hard to debug Skia bug (#2288).
• [varLib] Added support for building, reading, writing and optimizing 32-bit ItemVariationStore as used in COLRv1 table (#2285).
• [otBase/otConverters] Add array readers/writers for int types (#2285).
• [feaLib] Allow more than one lookahead glyph/class in contextual positioning with "value at end" (#2293, #2294).
• [COLRv1] Default varIdx should be 0xFFFFFFFF (#2297, #2298).
• [pens] Make RecordingPointPen actually pass on identifiers; replace asserts with explicit PenError exception (#2284).
• [mutator] Round lsb for CF2 fonts as well (#2286).

4.22.1 (released 2021-04-26)

• [feaLib] Skip references to named lookups if the lookup block definition is empty, similarly to makeotf. This also fixes an AttributeError while generating aalt feature (#2276, #2277).
• [subset] Fixed bug with --no-hinting implementation for Device tables (#2272, #2275). The previous code was alwyas dropping Device tables if no-hinting was requested, but some Device tables (DeltaFormat=0x8000) are also used to encode variation indices and need to be retained.
• [otBase] Fixed bug in getting the ValueRecordSize when decompiling MVAR table with lazy=True (#2273, #2274).
• [varLib/glyf/gvar] Optimized and simplified GlyphCoordinates and TupleVariation classes, use bytearray where possible, refactored phantom-points calculations. We measured about 30% speedup in total time of loading master ttfs, building gvar, and saving (#2261, #2266).
• [subset] Fixed AssertionError while pruning unused CPAL palettes when 0xFFFF is present (#2257, #2259).

4.22.0 (released 2021-04-01)

• [ttLib] Remove .Format from Coverage, ClassDef, SingleSubst, LigatureSubst, AlternateSubst, MultipleSubst (#2238). ATTENTION: This will change your TTX dumps!
• [misc.arrayTools] move Vector to its own submodule, and rewrite as a tuple subclass (#2201).
• [docs] Added a terminology section for varLib (#2209).
• [varLib] Move rounding to VariationModel, to avoid error accumulation from multiple deltas (#2214)
• [varLib] Explain merge errors in more human-friendly terms (#2223, #2226)
• [otlLib] Correct some documentation (#2225)
• [varLib/otlLib] Allow merging into VariationFont without first saving GPOS PairPos2 (#2229)
• [subset] Improve PairPosFormat2 subsetting (#2221)
• [ttLib] TTFont.save: create file on disk as late as possible (#2253)
• [cffLib] Add missing CFF2 dict operators LanguageGroup and ExpansionFactor (#2249) ATTENTION: This will change your TTX dumps!

4.21.1 (released 2021-02-26)

• [pens] Reverted breaking change that turned AbstractPen and AbstractPointPen into abstract base classes (#2164, #2198).

4.21.0 (released 2021-02-26)

• [feaLib] Indent anchor statements in asFea() to make them more legible and diff-able (#2193).
• [pens] Turn AbstractPen and AbstractPointPen into abstract base classes (#2164).
• [feaLib] Added support for parsing and building STAT table from AFDKO feature files (#2039).
• [instancer] Added option to update name table of generated instance using STAT table's axis values (#2189).
• [bezierTools] Added functions to compute bezier point-at-time, as well as line-line, curve-line and curve-curve intersections (#2192).

4.20.0 (released 2021-02-15)

• [COLRv1] Added unbuildColrV1 to deconstruct COLRv1 otTables to raw json-able data structure; it does the reverse of buildColrV1 (#2171).
• [feaLib] Allow sub X by NULL sequence to delete a glyph (#2170).
• [arrayTools] Fixed Vector division (#2173).
• [COLRv1] Define new PaintSweepGradient (#2172).
• [otTables] Moved Paint.Format enum class outside of Paint class definition, now named PaintFormat. It was clashing with paint instance Format attribute and thus was breaking lazy load of COLR table which relies on magic __getattr__ (#2175).
• [COLRv1] Replace hand-coded builder functions with otData-driven dynamic implementation (#2181).
• [COLRv1] Define additional static (non-variable) Paint formats (#2181).
• [subset] Added support for subsetting COLR v1 and CPAL tables (#2174, #2177).
• [fontBuilder] Allow setupFvar to optionally take designspaceLib.AxisDescriptor objects. Added new setupAvar method. Support localised names for axes and named instances (#2185).

4.19.1 (released 2021-01-28)

• [woff2] An initial off-curve point with an overlap flag now stays an off-curve point after compression.

4.19.0 (released 2021-01-25)

• [codecs] Handle errors parameter different from 'strict' for the custom extended mac encodings (#2137, #2132).
• [featureVars] Raise better error message when a script is missing the required default language system (#2154).
• [COLRv1] Avoid abrupt change caused by rounding PaintRadialGradient.c0 when the start circle almost touches the end circle's perimeter (#2148).
• [COLRv1] Support building unlimited lists of paints as 255-ary trees of PaintColrLayers tables (#2153).
• [subset] Prune redundant format-12 cmap subtables when all non-BMP characters are dropped (#2146).
• [basePen] Raise MissingComponentError instead of bare KeyError when a referenced component is missing (#2145).

4.18.2 (released 2020-12-16)

• [COLRv1] Implemented PaintTranslate paint format (#2129).
• [varLib.cff] Fixed unbound local variable error (#1787).
• [otlLib] Don't crash when creating OpenType class definitions if some glyphs occur more than once (#2125).

4.18.1 (released 2020-12-09)

• [colorLib] Speed optimization for LayerV1ListBuilder (#2119).
• [mutator] Fixed missing tab in interpolate_cff2_metrics (0957dc7a).

4.18.0 (released 2020-12-04)

• [COLRv1] Update to latest draft: added PaintRotate and PaintSkew (#2118).
• [woff2] Support new brotlicffi bindings for PyPy (#2117).
• [glifLib] Added expectContentsFile parameter to GlyphSet, for use when reading existing UFOs, to comply with the specification stating that a contents.plist file must exist in a glyph set (#2114).
• [subset] Allow LangSys tags in --layout-scripts option (#2112). For example: --layout-scripts=arab.dflt,arab.URD,latn; this will keep DefaultLangSys and URD language for arab script, and all languages for latn script.
• [varLib.interpolatable] Allow UFOs to be checked; report open paths, non existant glyphs; add a --json option to produce a machine-readable list of incompatibilities
• [pens] Added QuartzPen to create CGPath from glyph outlines on macOS. Requires pyobjc (#2107).
• [feaLib] You can export FONTTOOLS_LOOKUP_DEBUGGING=1 to enable feature file debugging info stored in Debg table (#2106).
• [otlLib] Build more efficient format 1 and format 2 contextual lookups whenever possible (#2101).

4.17.1 (released 2020-11-16)

• [colorLib] Fixed regression in 4.17.0 when building COLR v0 table; when color layers are stored in UFO lib plist, we can't distinguish tuples from lists so we need to accept either types (e5439eb9, googlefonts/ufo2ft/issues#426).

4.17.0 (released 2020-11-12)

• [colorLib/otData] Updated to latest draft COLR v1 spec (#2092).
• [svgLib] Fixed parsing error when arc commands' boolean flags are not separated by space or comma (#2094).
• [varLib] Interpret empty non-default glyphs as 'missing', if the default glyph is not empty (#2082).
• [feaLib.builder] Only stash lookup location for Debg if Builder.buildLookups_ has cooperated (#2065, #2067).
• [varLib] Fixed bug in VarStore optimizer (#2073, #2083).
• [varLib] Add designspace lib key for custom feavar feature tag (#2080).
• Add HashPointPen adapted from psautohint. With this pen, a hash value of a glyph can be computed, which can later be used to detect glyph changes (#2005).

4.16.1 (released 2020-10-05)

• [varLib.instancer] Fixed TypeError exception when instantiating a VF with a GSUB table 1.1 in which FeatureVariations attribute is present but set to None -- indicating that optional FeatureVariations is missing (#2077).
• [glifLib] Make x and y attributes of the point element required even when validation is turned off, and raise a meaningful GlifLibError message when that happens (#2075).

4.16.0 (released 2020-09-30)

• [removeOverlaps] Added new module and removeOverlaps function that merges overlapping contours and components in TrueType glyphs. It requires the skia-pathops module. Note that removing overlaps invalidates the TrueType hinting (#2068).
• [varLib.instancer] Added --remove-overlaps command-line option. The overlap option in instantiateVariableFont now takes an OverlapMode enum: 0: KEEP_AND_DONT_SET_FLAGS, 1: KEEP_AND_SET_FLAGS (default), and 2: REMOVE. The latter is equivalent to calling removeOverlaps on the generated static instance. The option continues to accept bool value for backward compatibility.

4.15.0 (released 2020-09-21)

• [plistlib] Added typing annotations to plistlib module. Set up mypy static typechecker to run automatically on CI (#2061).
• [ttLib] Implement private Debg table, a reverse-DNS namespaced JSON dict.
• [feaLib] Optionally add an entry into the Debg table with the original lookup name (if any), feature name / script / language combination (if any), and original source filename and line location. Annotate the ttx output for a lookup with the information from the Debg table (#2052).
• [sfnt] Disabled checksum checking by default in SFNTReader (#2058).
• [Docs] Document mtiLib module (#2027).
• [varLib.interpolatable] Added checks for contour node count and operation type of each node (#2054).
• [ttLib] Added API to register custom table packer/unpacker classes (#2055).

4.14.0 (released 2020-08-19)

• [feaLib] Allow anonymous classes in LookupFlags definitions (#2037).
• [Docs] Better document DesignSpace rules processing order (#2041).
• [ttLib] Fixed 21-year old bug in maxp.maxComponentDepth calculation (#2044, #2045).
• [varLib.models] Fixed misspelled argument name in CLI entry point (81d0042a).
• [subset] When subsetting GSUB v1.1, fixed TypeError by checking whether the optional FeatureVariations table is present (e63ecc5b).
• [Snippets] Added snippet to show how to decompose glyphs in a TTF (#2030).
• [otlLib] Generate GSUB type 5 and GPOS type 7 contextual lookups where appropriate (#2016).

4.13.0 (released 2020-07-10)

• [feaLib/otlLib] Moved lookup subtable builders from feaLib to otlLib; refactored some common code (#2004, #2007).
• [docs] Document otlLib module (#2009).
• [glifLib] Fixed bug with some UFO .glif filenames clashing on case-insensitive filesystems (#2001, #2002).
• [colorLib] Updated COLRv1 implementation following changes in the draft spec: (#2008, googlefonts/colr-gradients-spec#24).

4.12.1 (released 2020-06-16)

• [_n_a_m_e] Fixed error in addMultilingualName with one-character names. Only attempt to recovered malformed UTF-16 data from a bytes string, not from unicode str (#1997, #1998).

4.12.0 (released 2020-06-09)

• [otlLib/varLib] Ensure that the AxisNameID in the STAT and fvar tables is grater than 255 as per OpenType spec (#1985, #1986).
• [docs] Document more modules in fontTools.misc package: filenames, fixedTools, intTools, loggingTools, macCreatorType, macRes, plistlib (#1981).
• [OS/2] Don't calculate whole sets of unicode codepoints, use faster and more memory efficient ranges and bisect lookups (#1984).
• [voltLib] Support writing back abstract syntax tree as VOLT data (#1983).
• [voltLib] Accept DO_NOT_TOUCH_CMAP keyword (#1987).
• [subset/merge] Fixed a namespace clash involving a private helper class (#1955).

4.11.0 (released 2020-05-28)

• [feaLib] Introduced includeDir parameter on Parser and IncludingLexer to explicitly specify the directory to search when include() statements are encountered (#1973).
• [ufoLib] Silently delete duplicate glyphs within the same kerning group when reading groups (#1970).
• [ttLib] Set version of COLR table when decompiling COLRv1 (commit 9d8a7e2).

4.10.2 (released 2020-05-20)

• [sfnt] Fixed NameError: SimpleNamespace while reading TTC header. The regression was introduced with 4.10.1 after removing py23 star import.

4.10.1 (released 2020-05-19)

• [sfnt] Make SFNTReader pickleable even when TTFont is loaded with lazy=True option and thus keeps a reference to an external file (#1962, #1967).
• [feaLib.ast] Restore backward compatibility (broken in 4.10 with #1905) for ChainContextPosStatement and ChainContextSubstStatement classes. Make them accept either list of lookups or list of lists of lookups (#1961).
• [docs] Document some modules in fontTools.misc package: arrayTools, bezierTools cliTools and eexec (#1956).
• [ttLib._n_a_m_e] Fixed findMultilingualName() when name record's string is encoded as bytes sequence (#1963).

4.10.0 (released 2020-05-15)

• [varLib] Allow feature variations to be active across the entire space (#1957).
• [ufoLib] Added support for formatVersionMinor in UFO's fontinfo.plist and for formatMinor attribute in GLIF file as discussed in unified-font-object/ufo-spec#78. No changes in reading or writing UFOs until an upcoming (non-0) minor update of the UFO specification is published (#1786).
• [merge] Fixed merging fonts with different versions of OS/2 table (#1865, #1952).
• [subset] Fixed AttributeError while subsetting ContextSubst and ContextPos Format 3 subtable (#1879, #1944).
• [ttLib.table._m_e_t_a] if data happens to be ascii, emit comment in TTX (#1938).
• [feaLib] Support multiple lookups per glyph position (#1905).
• [psCharStrings] Use inheritance to avoid repeated code in initializer (#1932).
• [Doc] Improved documentation for the following modules: afmLib (#1933), agl (#1934), cffLib (#1935), cu2qu (#1937), encodings (#1940), feaLib (#1941), merge (#1949).
• [Doc] Split off developer-centric info to new page, making front page of docs more user-focused. List all utilities and sub-modules with brief descriptions. Make README more concise and focused (#1914).
• [otlLib] Add function to build STAT table from high-level description (#1926).
• [ttLib._n_a_m_e] Add findMultilingualName() method (#1921).
• [unicodedata] Update RTL_SCRIPTS for Unicode 13.0 (#1925).
• [gvar] Sort gvar XML output by glyph name, not glyph order (#1907, #1908).
• [Doc] Added help options to fonttools command line tool (#1913, #1920). Ensure all fonttools CLI tools have help documentation (#1948).
• [ufoLib] Only write fontinfo.plist when there actually is content (#1911).

4.9.0 (released 2020-04-29)

• [subset] Fixed subsetting of FeatureVariations table. The subsetter no longer drops FeatureVariationRecords that have empty substitutions as that will keep the search going and thus change the logic. It will only drop empty records that occur at the end of the FeatureVariationRecords array (#1881).
• [subset] Remove FeatureVariations table and downgrade GSUB/GPOS to version 0x10000 when FeatureVariations contain no FeatureVariationRecords after subsetting (#1903).
• [agl] Add support for legacy Adobe Glyph List of glyph names in fontTools.agl (#1895).
• [feaLib] Ignore superfluous script statements (#1883).
• [feaLib] Hide traceback by default on fonttools feaLib command line. Use --traceback option to show (#1898).
• [feaLib] Check lookup index in chaining sub/pos lookups and print better error message (#1896, #1897).
• [feaLib] Fix building chained alt substitutions (#1902).
• [Doc] Included all fontTools modules in the sphinx-generated documentation, and published it to ReadTheDocs for continuous documentation of the fontTools project (#1333). Check it out at https://fonttools.readthedocs.io/. Thanks to Chris Simpkins!
• [transform] The Transform class is now subclass of typing.NamedTuple. No change in functionality (#1904).

4.8.1 (released 2020-04-17)

• [feaLib] Fixed AttributeError: 'NoneType' has no attribute 'getAlternateGlyphs' when aalt feature references a chain contextual substitution lookup (googlefonts/fontmake#648, #1878).

4.8.0 (released 2020-04-16)

• [feaLib] If Parser is initialized without a glyphNames parameter, it cannot distinguish between a glyph name containing an hyphen, or a range of glyph names; instead of raising an error, it now interprets them as literal glyph names, while also outputting a logging warning to alert user about the ambiguity (#1768, #1870).
• [feaLib] When serializing AST to string, emit spaces around hyphens that denote ranges. Also, fixed an issue with CID ranges when round-tripping AST->string->AST (#1872).
• [Snippets/otf2ttf] In otf2ttf.py script update LSB in hmtx to match xMin (#1873).
• [colorLib] Added experimental support for building COLR v1 tables as per the colr-gradients-spec draft proposal. NOTE: both the API and the XML dump of COLR v1 are susceptible to change while the proposal is being discussed and formalized (#1822).

4.7.0 (released 2020-04-03)

• [cu2qu] Added fontTools.cu2qu package, imported from the original cu2qu project. The cu2qu.pens module was moved to fontTools.pens.cu2quPen. The optional cu2qu extension module can be compiled by installing Cython before installing fonttools from source (i.e. git repo or sdist tarball). The wheel package that is published on PyPI (i.e. the one pip downloads, unless --no-binary option is used), will continue to be pure-Python for now (#1868).

4.6.0 (released 2020-03-24)

• [varLib] Added support for building variable BASE table version 1.1 (#1858).
• [CPAL] Added fromRGBA method to Color class (#1861).

4.5.0 (released 2020-03-20)

• [designspaceLib] Added add{Axis,Source,Instance,Rule}Descriptor methods to DesignSpaceDocument class, to initialize new descriptor objects using keyword arguments, and at the same time append them to the current document (#1860).
• [unicodedata] Update to Unicode 13.0 (#1859).

4.4.3 (released 2020-03-13)

• [varLib] Always build gvar table for TrueType-flavored Variable Fonts, even if it contains no variation data. The table is required according to the OpenType spec (#1855, #1857).

4.4.2 (released 2020-03-12)

• [ttx] Annotate LookupFlag in XML dump with comment explaining what bits are set and what they mean (#1850).
• [feaLib] Added more descriptive message to IncludedFeaNotFound error (#1842).

4.4.1 (released 2020-02-26)

• [woff2] Skip normalizing glyf and loca tables if these are missing from a font (e.g. in NotoColorEmoji using CBDT/CBLC tables).
• [timeTools] Use non-localized date parsing in timestampFromString, to fix error when non-English LC_TIME locale is set (#1838, #1839).
• [fontBuilder] Make sure the CFF table generated by fontBuilder can be used by varLib without having to compile and decompile the table first. This was breaking in converting the CFF table to CFF2 due to some unset attributes (#1836).

4.4.0 (released 2020-02-18)

• [colorLib] Added fontTools.colorLib.builder module, initially with buildCOLR and buildCPAL public functions. More color font formats will follow (#1827).
• [fontBuilder] Added setupCOLR and setupCPAL methods (#1826).
• [ttGlyphPen] Quantize GlyphComponent.transform floats to F2Dot14 to fix round-trip issue when computing bounding boxes of transformed components (#1830).
• [glyf] If a component uses reference points (firstPt and secondPt) for alignment (instead of X and Y offsets), compute the effective translation offset after having applied any transform (#1831).
• [glyf] When all glyphs have zero contours, compile glyf table data as a single null byte in order to pass validation by OTS and Windows (#1829).
• [feaLib] Parsing feature code now ensures that referenced glyph names are part of the known glyph set, unless a glyph set was not provided.
• [varLib] When filling in the default axis value for a missing location of a source or instance, correctly map the value forward.
• [varLib] The avar table can now contain mapping output values that are greater than OR EQUAL to the preceeding value, as the avar specification allows this.
• [varLib] The errors of the module are now ordered hierarchically below VarLibError. See #1821.

4.3.0 (released 2020-02-03)

• [EBLC/CBLC] Fixed incorrect padding length calculation for Format 3 IndexSubTable (#1817, #1818).
• [varLib] Fixed error when merging OTL tables and TTFonts were loaded as lazy=True (#1808, #1809).
• [varLib] Allow to use master fonts containing CFF2 table when building VF (#1816).
• [ttLib] Make recalcBBoxes option work also with CFF2 table (#1816).
• [feaLib] Don't reset lookupflag in lookups defined inside feature blocks. They will now inherit the current lookupflag of the feature. This is what Adobe makeotf also does in this case (#1815).
• [feaLib] Fixed bug with mixed single/multiple substitutions. If a single substitution involved a glyph class, we were incorrectly using only the first glyph in the class (#1814).

4.2.5 (released 2020-01-29)

• [feaLib] Do not fail on duplicate multiple substitutions, only warn (#1811).
• [subset] Optimize SinglePos subtables to Format 1 if all ValueRecords are the same (#1802).

4.2.4 (released 2020-01-09)

• [unicodedata] Update RTL_SCRIPTS for Unicode 11 and 12.

4.2.3 (released 2020-01-07)

• [otTables] Fixed bug when splitting MarkBasePos subtables as offsets overflow. The mark class values in the split subtable were not being updated, leading to invalid mark-base attachments (#1797, notofonts/noto-source#145).
• [feaLib] Only log a warning instead of error when features contain duplicate substitutions (#1767).
• [glifLib] Strip XML comments when parsing with lxml (#1784, #1785).

4.2.2 (released 2019-12-12)

• [subset] Fixed issue with subsetting FeatureVariations table when the index of features changes as features get dropped. The feature index need to be remapped to point to index of the remaining features (#1777, #1782).
• [fontBuilder] Added addFeatureVariations method to FontBuilder class. This is a shorthand for calling featureVars.addFeatureVariations on the builder's TTFont object (#1781).
• [glyf] Fixed the flags bug in glyph.drawPoints() like we did for glyph.draw() (#1771, #1774).

4.2.1 (released 2019-12-06)

• [glyf] Use the flagOnCurve bit mask in glyph.draw(), so that we ignore the overlap flag that may be set when instantiating variable fonts (#1771).

4.2.0 (released 2019-11-28)

• [pens] Added the following pens:
  • roundingPen.RoundingPen: filter pen that rounds coordinates and components' offsets to integer;
  • roundingPen.RoundingPointPen: like the above, but using PointPen protocol.
  • filterPen.FilterPointPen: base class for filter point pens;
  • transformPen.TransformPointPen: filter point pen to apply affine transform;
  • recordingPen.RecordingPointPen: records and replays point-pen commands.
• [ttGlyphPen] Always round float coordinates and component offsets to integers (#1763).
• [ufoLib] When converting kerning groups from UFO2 to UFO3, avoid confusing groups with the same name as one of the glyphs (#1761, #1762, unified-font-object/ufo-spec#98).

4.1.0 (released 2019-11-18)

• [instancer] Implemented restricting axis ranges (level 3 partial instancing). You can now pass {axis_tag: (min, max)} tuples as input to the instantiateVariableFont function. Note that changing the default axis position is not supported yet. The command-line script also accepts axis ranges in the form of colon-separated float values, e.g. wght=400:700 (#1753, #1537).
• [instancer] Never drop STAT DesignAxis records, but only prune out-of-range AxisValue records.
• [otBase/otTables] Enforce that VarStore.RegionAxisCount == fvar.axisCount, even when regions list is empty to appease OTS < v8.0 (#1752).
• [designspaceLib] Defined new processing attribute for <rules> element, with values "first" or "last", plus other editorial changes to DesignSpace specification. Bumped format version to 4.1 (#1750).
• [varLib] Improved error message when masters' glyph orders do not match (#1758, #1759).
• [featureVars] Allow to specify custom feature tag in addFeatureVariations; allow said feature to already exist, in which case we append new lookup indices to existing features. Implemented <rules> attribute processing according to DesignSpace specification update in #1750. Depending on this flag, we generate either an 'rvrn' (always processed first) or a 'rclt' feature (follows lookup order, therefore last) (#1747, #1625, #1371).
• [ttCollection] Added support for context manager auto-closing via with statement like with TTFont (#1751).
• [unicodedata] Require unicodedata2 >= 12.1.0.
• [py2.py3] Removed yet more PY2 vestiges (#1743).
• [_n_a_m_e] Fixed issue when comparing NameRecords with different string types (#1742).
• [fixedTools] Changed fixedToFloat to not do any rounding but simply return value / (1 << precisionBits). Added floatToFixedToStr and strToFixedToFloat functions to be used when loading from or dumping to XML. Fixed values (e.g. fvar axes and instance coordinates, avar mappings, etc.) are are now stored as un-rounded decimal floats upon decompiling (#1740, #737).
• [feaLib] Fixed handling of multiple LigatureCaret statements for the same glyph. Only the first rule per glyph is used, additional ones are ignored (#1733).

4.0.2 (released 2019-09-26)

• [voltLib] Added support for ALL and NONE in PROCESS_MARKS (#1732).
• [Silf] Fixed issue in Silf table compilation and decompilation regarding str vs bytes in python3 (#1728).
• [merge] Handle duplicate glyph names better: instead of appending font index to all glyph names, use similar code like we use in post and CFF tables (#1729).

4.0.1 (released 2019-09-11)

• [otTables] Support fixing offset overflows in MultipleSubst lookup subtables (#1706).
• [subset] Prune empty strikes in EBDT and CBDT table data (#1698, #1633).
• [pens] Fixed issue in PointToSegmentPen when last point of closed contour has same coordinates as the starting point and was incorrectly dropped (#1720).
• [Graphite] Fixed Sill table output to pass OTS (#1705).
• [name] Added removeNames method to table__n_a_m_e class (#1719).
• [ttLib] Added aliases for renamed entries ascender and descender in hhea table (#1715).

4.0.0 (released 2019-08-22)

• NOTE: The v4.x version series only supports Python 3.6 or greater. You can keep using fonttools 3.x if you need support for Python 2.
• [py23] Removed all the python2-only code since it is no longer reachable, thus unused; only the Python3 symbols were kept, but these are no-op. The module is now DEPRECATED and will removed in the future.
• [ttLib] Fixed UnboundLocalError for empty loca/glyph tables (#1680). Also, allow the glyf table to be incomplete when dumping to XML (#1681).
• [varLib.models] Fixed KeyError while sorting masters and there are no on-axis for a given axis (38a8eb0e).
• [cffLib] Make sure glyph names are unique (#1699).
• [feaLib] Fix feature parser to correctly handle octal numbers (#1700).

3.44.0 (released 2019-08-02)

• NOTE: This is the last scheduled release to support Python 2.7. The upcoming fonttools v4.x series is going to require Python 3.6 or greater.
• [varLib] Added new varLib.instancer module for partially instantiating variable fonts. This extends (and will eventually replace) varLib.mutator module, as it allows to create not just full static instances from a variable font, but also "partial" or "less variable" fonts where some of the axes are dropped or instantiated at a particular value. Also available from the command-line as fonttools varLib.instancer --help (#1537, #1628).
• [cffLib] Added support for FDSelect format 4 (#1677).
• [subset] Added support for subsetting sbix (Apple bitmap color font) table.
• [t1Lib] Fixed issue parsing eexec section in Type1 fonts when whitespace characters are interspersed among the trailing zeros (#1676).
• [cffLib.specializer] Fixed bug in programToCommands with CFF2 charstrings (#1669).

3.43.2 (released 2019-07-10)

• [featureVars] Fixed region-merging code on python3 (#1659).
• [varLib.cff] Fixed merging of sparse PrivateDict items (#1653).

3.43.1 (released 2019-06-19)

• [subset] Fixed regression when passing --flavor=woff2 option with an input font that was already compressed as WOFF 1.0 (#1650).

3.43.0 (released 2019-06-18)

• [woff2] Added support for compressing/decompressing WOFF2 fonts with non-transformed glyf and loca tables, as well as with transformed hmtx table. Removed Snippets/woff2_compress.py and Snippets/woff2_decompress.py scripts, and replaced them with a new console entry point fonttools ttLib.woff2 that provides two sub-commands compress and decompress.
• [varLib.cff] Fixed bug when merging CFF2 PrivateDicts. The PrivateDict data from the first region font was incorrecty used for all subsequent fonts. The bug would only affect variable CFF2 fonts with hinting (#1643, #1644). Also, fixed a merging bug when VF masters have no blends or marking glyphs (#1632, #1642).
• [loggingTools] Removed unused backport of LastResortLogger class.
• [subset] Gracefully handle partial MATH table (#1635).
• [featureVars] Avoid duplicate references to rvrn feature record in DefaultLangSys tables when calling addFeatureVariations on a font that does not already have a GSUB table (aa8a5bc6).
• [varLib] Fixed merging of class-based kerning. Before, the process could introduce rogue kerning values and variations for random classes against class zero (everything not otherwise classed).
• [varLib] Fixed merging GPOS tables from master fonts with different number of SinglePos subtables (#1621, #1641).
• [unicodedata] Updated Blocks, Scripts and ScriptExtensions to Unicode 12.1.

3.42.0 (released 2019-05-28)

• [OS/2] Fixed sign of fsType: it should be uint16, not int16 (#1619).
• [subset] Skip out-of-range class values in mark attachment (#1478).
• [fontBuilder] Add an empty DSIG table with setupDummyDSIG method (#1621).
• [varLib.merger] Fixed bug whereby GDEF.GlyphClassDef were being dropped when generating instance via varLib.mutator (#1614).
• [varLib] Added command-line options -v and -q to configure logging (#1613).
• [subset] Update font extents in head table (#1612).
• [subset] Make --retain-gids truncate empty glyphs after the last non-empty glyph (#1611).
• [requirements] Updated unicodedata2 backport for Unicode 12.0.

3.41.2 (released 2019-05-13)

• [cffLib] Fixed issue when importing a CFF2 variable font from XML, whereby the VarStore state was not propagated to PrivateDict (#1598).
• [varLib] Don't drop post glyph names when building CFF2 variable font (#1609).

3.41.1 (released 2019-05-13)

• [designspaceLib] Added loadSourceFonts method to load source fonts using custom opener function (#1606).
• [head] Round font bounding box coordinates to integers to fix compile error if CFF font has float coordinates (#1604, #1605).
• [feaLib] Don't write None in ast.ValueRecord.asFea() (#1599).
• [subset] Fixed issue AssertionError when using --desubroutinize option (#1590, #1594).
• [graphite] Fixed bug in Silf table's decompile method unmasked by previous typo fix (#1597). Decode languange code as UTF-8 in Sill table's decompile method (#1600).

3.41.0 (released 2019-04-29)

• [varLib/cffLib] Added support for building CFF2 variable font from sparse masters, or masters with more than one model (multiple VarStore.VarData). In cffLib.specializer, added support for CFF2 CharStrings with blend operators (#1547, #1591).
• [subset] Fixed subsetting HVAR and VVAR with --retain-gids option, and when advances mapping is null while sidebearings mappings are non-null (#1587, #1588).
• Added otlLib.maxContextCalc module to compute OS/2.usMaxContext value. Calculate it automatically when compiling features with feaLib. Added option --recalc-max-context to subset module (#1582).
• [otBase/otTables] Fixed AttributeError on missing OT table fields after importing font from TTX (#1584).
• [graphite] Fixed typo Silf table's decompile method (#1586).
• [otlLib] Better compress GPOS SinglePos (LookupType 1) subtables (#1539).

3.40.0 (released 2019-04-08)

• [subset] Fixed error while subsetting VVAR with --retain-gids option (#1552).
• [designspaceLib] Use up-to-date default location in findDefault method (#1554).
• [voltLib] Allow passing file-like object to Parser.
• [arrayTools/glyf] calcIntBounds (used to compute bounding boxes of glyf table's glyphs) now uses otRound instead of round3 (#1566).
• [svgLib] Added support for converting more SVG shapes to path d strings (ellipse, line, polyline), as well as support for transform attributes. Only matrix transformations are currently supported (#1564, #1564).
• [varLib] Added support for building VVAR table from vmtx and VORG tables (#1551).
• [fontBuilder] Enable making CFF2 fonts with post table format 2 (#1557).
• Fixed DeprecationWarning on invalid escape sequences (#1562).

3.39.0 (released 2019-03-19)

• [ttLib/glyf] Raise more specific error when encountering recursive component references (#1545, #1546).
• [Doc/designspaceLib] Defined new public.skipExportGlyphs lib key (#1534, unified-font-object/ufo-spec#84).
• [varLib] Use vmtx to compute vertical phantom points; or hhea.ascent and head.unitsPerEM if vmtx is missing (#1528).
• [gvar/cvar] Sort XML element's min/value/max attributes in TupleVariation toXML to improve readability of TTX dump (#1527).
• [varLib.plot] Added support for 2D plots with only 1 variation axis (#1522).
• [designspaceLib] Use axes maps when normalizing locations in DesignSpaceDocument (#1226, #1521), and when finding default source (#1535).
• [mutator] Set OVERLAP_SIMPLE and OVERLAP_COMPOUND glyf flags by default in instantiateVariableFont. Added --no-overlap cli option to disable this (#1518).
• [subset] Fixed subsetting VVAR table (#1516, #1517). Fixed subsetting an HVAR table that has an AdvanceWidthMap when the option --retain-gids is used.
• [feaLib] Added forceChained in MultipleSubstStatement (#1511). Fixed double indentation of subtable statement (#1512). Added support for subtable statement in more places than just PairPos lookups (#1520). Handle lookupflag 0 and lookupflag without a value (#1540).
• [varLib] In load_designspace, provide a default English name for the ital axis tag.
• Remove pyftinspect because it is unmaintained and bitrotted.

3.38.0 (released 2019-02-18)

• [cffLib] Fixed RecursionError when unpickling or deepcopying TTFont with CFF table (#1488, 649dc49).
• [subset] Fixed AttributeError when using --desubroutinize option (#1490). Also, fixed desubroutinizing bug when subrs contain hints (#1499).
• [CPAL] Make Color a subclass of namedtuple (173a0f5).
• [feaLib] Allow hyphen in glyph class names.
• [feaLib] Added 'tables' option to __main__.py (#1497).
• [feaLib] Add support for special-case contextual positioning formatting (#1501).
• [svgLib] Support converting SVG basic shapes (rect, circle, etc.) into equivalent SVG paths (#1500, #1508).
• [Snippets] Added name-viewer.ipynb Jupyter notebook.

3.37.3 (released 2019-02-05)

• The previous release accidentally changed several files from Unix to DOS line-endings. Fix that.

3.37.2 (released 2019-02-05)

• [varLib] Temporarily revert the fix to load_masters(), which caused a crash in interpolate_layout() when deepcopy-ing OTFs.

3.37.1 (released 2019-02-05)

• [varLib] load_masters() now actually assigns the fonts it loads to the source.font attributes.
• [varLib] Fixed an MVAR table generation crash when sparse masters were involved.
• [voltLib] parse_coverage_() returns a tuple instead of an ast.Enum.
• [feaLib] A MarkClassDefinition inside a block is no longer doubly indented compared to the rest of the block.

3.37.0 (released 2019-01-28)

• [svgLib] Added support for converting elliptical arcs to cubic bezier curves (#1464).
• [py23] Added backport for math.isfinite.
• [varLib] Apply HIDDEN flag to fvar axis if designspace axis has attribute hidden=1.
• Fixed "DeprecationWarning: invalid escape sequence" in Python 3.7.
• [voltLib] Fixed parsing glyph groups. Distinguish different PROCESS_MARKS. Accept COMPONENT glyph type.
• [feaLib] Distinguish missing value and explicit <NULL> for PairPos2 format A (#1459). Round-trip useExtension keyword. Implemented ValueRecord.asFea method.
• [subset] Insert empty widths into hdmx when retaining gids (#1458).

3.36.0 (released 2019-01-17)

• [ttx] Added --no-recalc-timestamp option to keep the original font's head.modified timestamp (#1455, #46).
• [ttx/psCharStrings] Fixed issues while dumping and round-tripping CFF2 table with ttx (#1451, #1452, #1456).
• [voltLib] Fixed check for duplicate anchors (#1450). Don't try to read past the END operator in .vtp file (#1453).
• [varLib] Use sentinel value -0x8000 (-32768) to ignore post.underlineThickness and post.underlinePosition when generating MVAR deltas (#1449, googlefonts/ufo2ft#308).
• [subset] Added --retain-gids option to subset font without modifying the current glyph indices (#1443, #1447).
• [ufoLib] Replace deprecated calls to getbytes and setbytes with new equivalent readbytes and writebytes calls. fs >= 2.2 no required.
• [varLib] Allow loading masters from TTX files as well (#1441).

3.35.2 (released 2019-01-14)

• [hmtx/vmtx]: Allow to compile/decompile hmtx and vmtx tables even without the corresponding (required) metrics header tables, hhea and vhea (#1439).
• [varLib] Added support for localized axes' labelname and named instances' stylename (#1438).

3.35.1 (released 2019-01-09)

• [_m_a_x_p] Include maxComponentElements in maxp table's recalculation.

3.35.0 (released 2019-01-07)

• [psCharStrings] In encodeFloat function, use float's "general format" with 8 digits of precision (i.e. %8g) instead of str(). This works around a macOS rendering issue when real numbers in CFF table are too long, and also makes sure that floats are encoded with the same precision in python 2.7 and 3.x (#1430, googlefonts/ufo2ft#306).
• [_n_a_m_e/fontBuilder] Make _n_a_m_e_table.addMultilingualName also add Macintosh (platformID=1) names by default. Added options to FontBuilder setupNameTable method to optionally disable Macintosh or Windows names. (#1359, #1431).
• [varLib] Make build optionally accept a DesignSpaceDocument object, instead of a designspace file path. The caller can now set the font attribute of designspace's sources to a TTFont object, thus allowing to skip filenames manipulation altogether (#1416, #1425).
• [sfnt] Allow SFNTReader objects to be deep-copied.
• Require typing>=3.6.4 on py27 to fix issue with singledispatch (#1423).
• [designspaceLib/t1Lib/macRes] Fixed some cases where pathlib.Path objects were not accepted (#1421).
• [varLib] Fixed merging of multiple PairPosFormat2 subtables (#1411).
• [varLib] The default STAT table version is now set to 1.1, to improve compatibility with legacy applications (#1413).

3.34.2 (released 2018-12-17)

• [merge] Fixed AssertionError when none of the script tables in GPOS/GSUB have a DefaultLangSys record (#1408, 135a4a1).

3.34.1 (released 2018-12-17)

• [varLib] Work around macOS rendering issue for composites without gvar entry (#1381).

3.34.0 (released 2018-12-14)

• [varLib] Support generation of CFF2 variable fonts. model.reorderMasters() now supports arbitrary mapping. Fix handling of overlapping ranges for feature variations (#1400).
• [cffLib, subset] Code clean-up and fixing related to CFF2 support.
• [ttLib.tables.ttProgram] Use raw strings for regex patterns (#1389).
• [fontbuilder] Initial support for building CFF2 fonts. Set CFF's FontMatrix automatically from unitsPerEm.
• [plistLib] Accept the more general collections.Mapping instead of the specific dict class to support custom data classes that should serialize to dictionaries.

3.33.0 (released 2018-11-30)

• [subset] subsetter bug fix with variable fonts.
• [varLib.featureVar] Improve FeatureVariations generation with many rules.
• [varLib] Enable sparse masters when building variable fonts: fonttools#1368 (comment)
• [varLib.mutator] Add IDEF for GETVARIATION opcode, for handling hints in an instance.
• [ttLib] Ignore the length of kern table subtable format 0

3.32.0 (released 2018-11-01)

• [ufoLib] Make UFOWriter a subclass of UFOReader, and use mixins for shared methods (#1344).
• [featureVars] Fixed normalization error when a condition's minimum/maximum attributes are missing in designspace <rule> (#1366).
• [setup.py] Added [plot] to extras, to optionally install matplotlib, needed to use the fonTools.varLib.plot module.
• [varLib] Take total bounding box into account when resolving model (7ee81c8). If multiple axes have the same range ratio, cut across both (62003f4).
• [subset] Don't error if STAT has no AxisValue tables.
• [fontBuilder] Added a new submodule which contains a FontBuilder wrapper class around TTFont that makes it easier to create a working TTF or OTF font from scratch with code. NOTE: the API is still experimental and may change in future versions.

3.31.0 (released 2018-10-21)

• [ufoLib] Merged the ufoLib master branch into a new fontTools.ufoLib package (#1335, #1095). Moved ufoLib.pointPen module to fontTools.pens.pointPen. Moved ufoLib.etree module to fontTools.misc.etree. Moved ufoLib.plistlib module to fontTools.misc.plistlib. To use the new fontTools.ufoLib module you need to install fonttools with the [ufo] extra, or you can manually install the required additional dependencies (cf. README.rst).
• [morx] Support AAT action type to insert glyphs and clean up compilation of AAT action tables (4a1871f, 2011ccf).
• [subset] The --no-hinting on a CFF font now also drops the optional hinting keys in Private dict: ForceBold, LanguageGroup, and ExpansionFactor (#1322).
• [subset] Include nameIDs referenced by STAT table (#1327).
• [loggingTools] Added msg=None argument to CapturingLogHandler.assertRegex (0245f2c).
• [varLib.mutator] Implemented FeatureVariations instantiation (#1244).
• [g_l_y_f] Added PointPen support to _TTGlyph objects (#1334).

3.30.0 (released 2018-09-18)

• [feaLib] Skip building noop class PairPos subtables when Coverage is NULL (#1318).
• [ttx] Expose the previously reserved bit flag OVERLAP_SIMPLE of glyf table's contour points in the TTX dump. This is used in some implementations to specify a non-zero fill with overlapping contours (#1316).
• [ttLib] Added support for decompiling/compiling TS1C tables containing VTT sources for cvar variation table (#1310).
• [varLib] Use fontTools.designspaceLib to read DesignSpaceDocument. The fontTools.varLib.designspace module is now deprecated and will be removed in future versions. The presence of an explicit axes element is now required in order to build a variable font (#1224, #1313).
• [varLib] Implemented building GSUB FeatureVariations table from the rules element of DesignSpace document (#1240, #713, #1314).
• [subset] Added --no-layout-closure option to not expand the subset with the glyphs produced by OpenType layout features. Instead, OpenType features will be subset to only rules that are relevant to the otherwise-specified glyph set (#43, #1121).

3.29.1 (released 2018-09-10)

• [feaLib] Fixed issue whereby lookups from DFLT/dflt were not included in the DFLT/non-dflt language systems (#1307).
• [graphite] Fixed issue on big-endian architectures (e.g. ppc64) (#1311).
• [subset] Added --layout-scripts option to add/exclude set of OpenType layout scripts that will be preserved. By default all scripts are retained ('*') (#1303).

3.29.0 (released 2018-07-26)

• [feaLib] In the OTL table builder, when the name table is excluded from the list of tables to be build, skip compiling featureNames blocks, as the records referenced in FeatureParams table don't exist (68951b7).
• [otBase] Try ExtensionLookup if other offset-overflow methods fail (05f95f0).
• [feaLib] Added support for explicit subtable; break statements in PairPos lookups; previously these were ignored (#1279, #1300, #1302).
• [cffLib.specializer] Make sure the stack depth does not exceed maxstack - 1, so that a subroutinizer can insert subroutine calls (#1301, googlefonts/ufo2ft#266).
• [otTables] Added support for fixing offset overflow errors occurring inside MarkBasePos subtables (#1297).
• [subset] Write the default output file extension based on --flavor option, or the value of TTFont.sfntVersion (d7ac0ad).
• [unicodedata] Updated Blocks, Scripts and ScriptExtensions for Unicode 11 (452c85e).
• [xmlWriter] Added context manager to XMLWriter class to autoclose file descriptor on exit (#1290).
• [psCharStrings] Optimize the charstring's bytecode by encoding as integers all float values that have no decimal portion (8d7774a).
• [ttFont] Fixed missing import of TTLibError exception (#1285).
• [feaLib] Allow any languages other than dflt under DFLT script (#1278, #1292).

3.28.0 (released 2018-06-19)

• [featureVars] Added experimental module to build FeatureVariations tables. Still needs to be hooked up to varLib.build (#1240).
• [fixedTools] Added otRound to round floats to nearest integer towards positive Infinity. This is now used where we deal with visual data like X/Y coordinates, advance widths/heights, variation deltas, and similar (#1274, #1248).
• [subset] Improved GSUB closure memoize algorithm.
• [varLib.models] Fixed regression in model resolution (180124, #1269).
• [feaLib.ast] Fixed error when converting SubtableStatement to string (#1275).
• [varLib.mutator] Set OS/2.usWeightClass and usWidthClass, and post.italicAngle based on the 'wght', 'wdth' and 'slnt' axis values (#1276, #1264).
• [py23/loggingTools] Don't automatically set logging.lastResort handler on py27. Moved LastResortLogger to the loggingTools module (#1277).

3.27.1 (released 2018-06-11)

• [ttGlyphPen] Issue a warning and skip building non-existing components (googlefonts/fontmake#411).
• [tests] Fixed issue running ttx_test.py from a tagged commit.

3.27.0 (released 2018-06-11)

• [designspaceLib] Added new conditionSet element to rule element in designspace document. Bumped format attribute to 4.0 (previously, it was formatted as an integer). Removed checkDefault, checkAxes methods, and any kind of guessing about the axes when the <axes> element is missing. The default master is expected at the intersection of all default values for each axis (#1254, #1255, #1267).
• [cffLib] Fixed issues when compiling CFF2 or converting from CFF when the font has an FDArray (#1211, #1271).
• [varLib] Avoid attempting to build cvar table when glyf table is not present, as is the case for CFF2 fonts.
• [subset] Handle None coverages in MarkGlyphSets; revert commit 02616ab that sets empty Coverage tables in MarkGlyphSets to None, to make OTS happy.
• [ttFont] Allow to build glyph order from maxp.numGlyphs when post or cmap are missing.
• [ttFont] Added __len__ method to _TTGlyphSet.
• [glyf] Ensure GlyphCoordinates never overflow signed shorts (#1230).
• [py23] Added alias for itertools.izip shadowing the built-in zip.
• [loggingTools] Memoize log property of LogMixin class (fbab12).
• [ttx] Impoved test coverage (#1261).
• [Snippets] Addded script to append a suffix to all family names in a font.
• [varLib.plot] Make it work with matplotlib >= 2.1 (b38e2b).

3.26.0 (released 2018-05-03)

• [designspace] Added a new optional layer attribute to the source element, and a corresponding layerName attribute to the SourceDescriptor object (#1253). Added conditionset element to the rule element to the spec, but not implemented in designspace reader/writer yet (#1254).
• [varLib.models] Refine modeling one last time (0ecf5c5).
• [otBase] Fixed sharing of tables referred to by different offset sizes (795f2f9).
• [subset] Don't drop a GDEF that only has VarStore (fc819d6). Set to None empty Coverage tables in MarkGlyphSets (02616ab).
• [varLib]: Added --master-finder command-line option (#1249).
• [varLib.mutator] Prune fvar nameIDs from instance's name table (#1245).
• [otTables] Allow decompiling bad ClassDef tables with invalid format, with warning (#1236).
• [varLib] Make STAT v1.2 and reuse nameIDs from fvar table (#1242).
• [varLib.plot] Show master locations. Set axis limits to -1, +1.
• [subset] Handle HVAR direct mapping. Passthrough 'cvar'. Added --font-number command-line option for collections.
• [t1Lib] Allow a text encoding to be specified when parsing a Type 1 font (#1234). Added kind argument to T1Font constructor (c5c161c).
• [ttLib] Added context manager API to TTFont class, so it can be used in with statements to auto-close the file when exiting the context (#1232).

3.25.0 (released 2018-04-03)

• [varLib] Improved support-resolution algorithm. Previously, the on-axis masters would always cut the space. They don't anymore. That's more consistent, and fixes the main issue Erik showed at TYPO Labs 2017. Any varfont built that had an unusual master configuration will change when rebuilt (42bef17, a523a697, googlefonts/fontmake#264).
• [varLib.models] Added a main() entry point, that takes positions and prints model results.
• [varLib.plot] Added new module to plot a designspace's VariationModel. Requires matplotlib.
• [varLib.mutator] Added -o option to specify output file path (2ef60fa).
• [otTables] Fixed IndexError while pruning of HVAR pre-write (6b6c34a).
• [varLib.models] Convert delta array to floats if values overflows signed short integer (0055f94).

3.24.2 (released 2018-03-26)

• [otBase] Don't fail during ValueRecord copy if src has more items. We drop hinting in the subsetter by simply changing ValueFormat, without cleaning up the actual ValueRecords. This was causing assertion error if a variable font was subsetted without hinting and then passed directly to the mutator for instantiation without first it saving to disk.

3.24.1 (released 2018-03-06)

• [varLib] Don't remap the same DeviceTable twice in VarStore optimizer (#1206).
• [varLib] Add --disable-iup option to fonttools varLib script, and a optimize=True keyword argument to varLib.build function, to optionally disable IUP optimization while building varfonts.
• [ttCollection] Fixed issue while decompiling ttc with python3 (#1207).

3.24.0 (released 2018-03-01)

• [ttGlyphPen] Decompose composite glyphs if any components' transform is too large to fit a F2Dot14 value, or clamp transform values that are (almost) equal to +2.0 to make them fit and avoid decomposing (#1200, #1204, #1205).
• [ttx] Added new -g option to dump glyphs from the glyf table splitted as individual ttx files (#153, #1035, #1132, #1202).
• Copied ufoLib.filenames module to fontTools.misc.filenames, used for the ttx split-glyphs option (#1202).
• [feaLib] Added support for cvParameters blocks in Character Variant feautures cv01-cv99 (#860, #1169).
• [Snippets] Added checksum.py script to generate/check SHA1 hash of ttx files (#1197).
• [varLib.mutator] Fixed issue while instantiating some variable fonts whereby the horizontal advance width computed from gvar phantom points could turn up to be negative (#1198).
• [varLib/subset] Fixed issue with subsetting GPOS variation data not picking up ValueRecord Device objects (54fd71f).
• [feaLib/voltLib] In all AST elements, the location is no longer a required positional argument, but an optional kewyord argument (defaults to None). This will make it easier to construct feature AST from code (#1201).

3.23.0 (released 2018-02-26)

• [designspaceLib] Added an optional lib element to the designspace as a whole, as well as to the instance elements, to store arbitrary data in a property list dictionary, similar to the UFO's lib. Added an optional font attribute to the SourceDescriptor, to allow operating on in-memory font objects (#1175).
• [cffLib] Fixed issue with lazy-loading of attributes when attempting to set the CFF TopDict.Encoding (#1177, #1187).
• [ttx] Fixed regression introduced in 3.22.0 that affected the split tables -s option (#1188).
• [feaLib] Added IncludedFeaNotFound custom exception subclass, raised when an included feature file cannot be found (#1186).
• [otTables] Changed VarIdxMap to use glyph names internally instead of glyph indexes. The old ttx dumps of HVAR/VVAR tables that contain indexes can still be imported (21cbab8, 38a0ffb).
• [varLib] Implemented VarStore optimizer (#1184).
• [subset] Implemented pruning of GDEF VarStore, HVAR and MVAR (#1179).
• [sfnt] Restore backward compatiblity with numFonts attribute of SFNTReader object (#1181).
• [merge] Initial support for merging LangSysRecords (#1180).
• [ttCollection] don't seek(0) when writing to possibly unseekable strems.
• [subset] Keep all --name-IDs from 0 to 6 by default (#1170, #605, #114).
• [cffLib] Added width module to calculate optimal CFF default and nominal glyph widths.
• [varLib] Don’t fail if STAT already in the master fonts (#1166).

3.22.0 (released 2018-02-04)

• [subset] Support subsetting endchar acting as seac-like components in CFF (fixes #1162).
• [feaLib] Allow to build from pre-parsed ast.FeatureFile object. Added tables argument to only build some tables instead of all (#1159, #1163).
• [textTools] Replaced safeEval with ast.literal_eval (#1139).
• [feaLib] Added option to the parser to not resolve include statements (#1154).
• [ttLib] Added new ttCollection module to read/write TrueType and OpenType Collections. Exports a TTCollection class with a fonts attribute containing a list of TTFont instances, the methods save and saveXML, plus some list-like methods. The importXML method is not implemented yet (#17).
• [unicodeadata] Added ot_tag_to_script function that converts from OpenType script tag to Unicode script code.
• Added new designspaceLib subpackage, originally from Erik Van Blokland's designSpaceDocument: https://github.com/LettError/designSpaceDocument NOTE: this is not yet used internally by varLib, and the API may be subject to changes (#911, #1110, LettError/designSpaceDocument#28).
• Added new FontTools icon images (8ee7c32).
• [unicodedata] Added script_horizontal_direction function that returns either "LTR" or "RTL" given a unicode script code.
• [otConverters] Don't write descriptive name string as XML comment if the NameID value is 0 (== NULL) (#1151, #1152).
• [unicodedata] Add ot_tags_from_script function to get the list of OpenType script tags associated with unicode script code (#1150).
• [feaLib] Don't error when "enumerated" kern pairs conflict with preceding single pairs; emit warning and chose the first value (#1147, #1148).
• [loggingTools] In CapturingLogHandler.assertRegex method, match the fully formatted log message.
• [sbix] Fixed TypeError when concatenating str and bytes (#1154).
• [bezierTools] Implemented cusp support and removed approximate_fallback arg in calcQuadraticArcLength. Added calcCubicArcLength (#1142).

3.21.2 (released 2018-01-08)

• [varLib] Fixed merging PairPos Format1/2 with missing subtables (#1125).

3.21.1 (released 2018-01-03)

• [feaLib] Allow mixed single/multiple substitutions (#612)
• Added missing *.afm test assets to MAINFEST.in (#1137).
• Fixed dumping SVG tables containing color palettes (#1124).

3.21.0 (released 2017-12-18)

• [cmap] when compiling format6 subtable, don't assume gid0 is always called '.notdef' (1e42224).
• [ot] Allow decompiling fonts with bad Coverage format number (1aafae8).
• Change FontTools licence to MIT (#1127).
• [post] Prune extra names already in standard Mac set (df1e8c7).
• [subset] Delete empty SubrsIndex after subsetting (#994, #1118).
• [varLib] Don't share points in cvar by default, as it currently fails on some browsers (#1113).
• [afmLib] Make poor old afmLib work on python3.

3.20.1 (released 2017-11-22)

• [unicodedata] Fixed issue with script and script_extension functions returning inconsistent short vs long names. They both return the short four- letter script codes now. Added script_name and script_code functions to look up the long human-readable script name from the script code, and viceversa (#1109, #1111).

3.20.0 (released 2017-11-21)

• [unicodedata] Addded new module fontTools.unicodedata which exports the same interface as the built-in unicodedata module, with the addition of a few functions that are missing from the latter, such as script, script_extension and block. Added a MetaTools/buildUCD.py script to download and parse data files from the Unicode Character Database and generate python modules containing lists of ranges and property values.
• [feaLib] Added __str__ method to all ast elements (delegates to the asFea method).
• [feaLib] Parser constructor now accepts a glyphNames iterable instead of glyphMap dict. The latter still works but with a pending deprecation warning (#1104).
• [bezierTools] Added arc length calculation functions originally from pens.perimeterPen module (#1101).
• [varLib] Started generating STAT table (8af4309). Right now it just reflects the axes, and even that with certain limitations: * AxisOrdering is set to the order axes are defined, * Name-table entries are not shared with fvar.
• [py23] Added backports for redirect_stdout and redirect_stderr context managers (#1097).
• [Graphite] Fixed some round-trip bugs (#1093).

3.19.0 (released 2017-11-06)

• [varLib] Try set of used points instead of all points when testing whether to share points between tuples (#1090).
• [CFF2] Fixed issue with reading/writing PrivateDict BlueValues to TTX file. Read the commit message 8b02b5a and issue #1030 for more details. NOTE: this change invalidates all the TTX files containing CFF2 tables that where dumped with previous verisons of fonttools. CFF2 Subr items can have values on the stack after the last operator, thus a CFF2Subr class was added to accommodate this (#1091).
• [_k_e_r_n] Fixed compilation of AAT kern version=1.0 tables (#1089, #1094)
• [ttLib] Added getBestCmap() convenience method to TTFont class and cmap table class that returns a preferred Unicode cmap subtable given a list of options (#1092).
• [morx] Emit more meaningful subtable flags. Implement InsertionMorphAction

3.18.0 (released 2017-10-30)

• [feaLib] Fixed writing back nested glyph classes (#1086).
• [TupleVariation] Reactivated shared points logic, bugfixes (#1009).
• [AAT] Implemented morx ligature subtables (#1082).
• [reverseContourPen] Keep duplicate lineTo following a moveTo (#1080, googlefonts/cu2qu#51).
• [varLib.mutator] Suport instantiation of GPOS, GDEF and MVAR (#1079).
• [sstruct] Fixed issue with unicode_literals and struct module in old versions of python 2.7 (#993).

3.17.0 (released 2017-10-16)

• [svgPathPen] Added an SVGPathPen that translates segment pen commands into SVG path descriptions. Copied from Tal Leming's ufo2svg.svgPathPen https://github.com/typesupply/ufo2svg/blob/d69f992/Lib/ufo2svg/svgPathPen.py
• [reverseContourPen] Added ReverseContourPen, a filter pen that draws contours with the winding direction reversed, while keeping the starting point (#1071).
• [filterPen] Added ContourFilterPen to manipulate contours as a whole rather than segment by segment.
• [arrayTools] Added Vector class to apply math operations on an array of numbers, and pairwise function to loop over pairs of items in an iterable.
• [varLib] Added support for building and interpolation of cvar table (f874cf6, a25a401).

3.16.0 (released 2017-10-03)

• [head] Try using SOURCE_DATE_EPOCH environment variable when setting the head modified timestamp to ensure reproducible builds (#1063). See https://reproducible-builds.org/specs/source-date-epoch/
• [VTT] Decode VTT's TSI* tables text as UTF-8 (#1060).
• Added support for Graphite font tables: Feat, Glat, Gloc, Silf and Sill. Thanks @mhosken! (#1054).
• [varLib] Default to using axis "name" attribute if "labelname" element is missing (588f524).
• [merge] Added support for merging Script records. Remove unused features and lookups after merge (d802580, 556508b).
• Added fontTools.svgLib package. Includes a parser for SVG Paths that supports the Pen protocol (#1051). Also, added a snippet to convert SVG outlines to UFO GLIF (#1053).
• [AAT] Added support for ankr, bsln, mort, morx, gcid, and cidg.
• [subset] Implemented subsetting of prop, opbd, bsln, lcar.

3.15.1 (released 2017-08-18)

• [otConverters] Implemented __add__ and __radd__ methods on otConverters._LazyList that decompile a lazy list before adding it to another list or _LazyList instance. Fixes an AttributeError in the subset module when attempting to sum _LazyList objects (6ef48bd2, 1aef1683).
• [AAT] Support the opbd table with optical bounds (a47f6588).
• [AAT] Support prop table with glyph properties (d05617b4).

3.15.0 (released 2017-08-17)

• [AAT] Added support for AAT lookups. The lcar table can be decompiled and recompiled; futher work needed to handle morx table (#1025).
• [subset] Keep (empty) DefaultLangSys for Script 'DFLT' (6eb807b5).
• [subset] Support GSUB/GPOS.FeatureVariations (fe01d87b).
• [varLib] In models.supportScalars, ignore an axis when its peak value is 0 (fixes #1020).
• [varLib] Add default mappings to all axes in avar to fix rendering issue in some rasterizers (19c4b377, 04eacf13).
• [varLib] Flatten multiple tail PairPosFormat2 subtables before merging (c55ef525).
• [ttLib] Added support for recalculating font bounding box in CFF and head tables, and min/max values in hhea and vhea tables (#970).

3.14.0 (released 2017-07-31)

• [varLib.merger] Remove Extensions subtables before merging (f7c20cf8).
• [varLib] Initialize the avar segment map with required default entries (#1014).
• [varLib] Implemented optimal IUP optmiziation (#1019).
• [otData] Add AxisValueFormat4 for STAT table v1.2 from OT v1.8.2 (#1015).
• [name] Fixed BCP46 language tag for Mac langID=9: 'si' -> 'sl'.
• [subset] Return value from _DehintingT2Decompiler.op_hintmask (c0d672ba).
• [cffLib] Allow to get TopDict by index as well as by name (dca96c9c).
• [cffLib] Removed global isCFF2 state; use one set of classes for both CFF and CFF2, maintaining backward compatibility existing code (#1007).
• [cffLib] Deprecated maxstack operator, per OpenType spec update 1.8.1.
• [cffLib] Added missing default (-100) for UnderlinePosition (#983).
• [feaLib] Enable setting nameIDs greater than 255 (#1003).
• [varLib] Recalculate ValueFormat when merging SinglePos (#996).
• [varLib] Do not emit MVAR if there are no entries in the variation store (#987).
• [ttx] For -x option, pad with space if table tag length is < 4.

3.13.1 (released 2017-05-30)

• [feaLib.builder] Removed duplicate lookups optimization. The original lookup order and semantics of the feature file are preserved (#976).

3.13.0 (released 2017-05-24)

• [varLib.mutator] Implement IUP optimization (#969).
• [_g_l_y_f.GlyphCoordinates] Changed __bool__() semantics to match those of other iterables (e46f949). Removed __abs__() (3db5be2).
• [varLib.interpolate_layout] Added mapped keyword argument to interpolate_layout to allow disabling avar mapping: if False (default), the location is mapped using the map element of the axes in designspace file; if True, it is assumed that location is in designspace's internal space and no mapping is performed (#950, #975).
• [varLib.interpolate_layout] Import designspace-loading logic from varLib.
• [varLib] Fixed bug with recombining PairPosClass2 subtables (81498e5, #914).
• [cffLib.specializer] When copying iterables, cast to list (462b7f86).

3.12.1 (released 2017-05-18)

• [pens.t2CharStringPen] Fixed AttributeError when calling addComponent in T2CharStringPen (#965).

3.12.0 (released 2017-05-17)

• [cffLib.specializer] Added new specializer module to optimize CFF charstrings, used by the T2CharStringPen (#948).
• [varLib.mutator] Sort glyphs by component depth before calculating composite glyphs' bounding boxes to ensure deltas are correctly caclulated (#945).
• [_g_l_y_f] Fixed loss of precision in GlyphCoordinates by using 'd' (double) instead of 'f' (float) as array.array typecode (#963, #964).

3.11.0 (released 2017-05-03)

• [t2CharStringPen] Initial support for specialized Type2 path operators: vmoveto, hmoveto, vlineto, hlineto, vvcurveto, hhcurveto, vhcurveto and hvcurveto. This should produce more compact charstrings (#940, #403).
• [Doc] Added Sphinx sources for the documentation. Thanks @gferreira (#935).
• [fvar] Expose flags in XML (#932)
• [name] Add helper function for building multi-lingual names (#921)
• [varLib] Fixed kern merging when a PairPosFormat2 has ClassDef1 with glyphs that are NOT present in the Coverage (1b5e1c4, #939).
• [varLib] Fixed non-deterministic ClassDef order with PY3 (f056c12, #927).
• [feLib] Throw an error when the same glyph is defined in multiple mark classes within the same lookup (3e3ff00, #453).

3.10.0 (released 2017-04-14)

• [varLib] Added support for building avar table, using the designspace <map> elements.
• [varLib] Removed unused build(..., axisMap) argument. Axis map should be specified in designspace file now. We do not accept nonstandard axes if <axes> element is not present.
• [varLib] Removed "custom" axis from the standard_axis_map. This was added before when glyphsLib was always exporting the (unused) custom axis.
• [varLib] Added partial support for building MVAR table; does not implement gasp table variations yet.
• [pens] Added FilterPen base class, for pens that control another pen; factored out addComponent method from BasePen into a separate abstract DecomposingPen class; added DecomposingRecordingPen, which records components decomposed as regular contours.
• [TSI1] Fixed computation of the textLength of VTT private tables (#913).
• [loggingTools] Added LogMixin class providing a log property to subclasses, which returns a logging.Logger named after the latter.
• [loggingTools] Added assertRegex method to CapturingLogHandler.
• [py23] Added backport for python 3's types.SimpleNamespace class.
• [EBLC] Fixed issue with python 3 zip iterator.

3.9.2 (released 2017-04-08)

• [pens] Added pen to draw glyphs using WxPython GraphicsPath class: https://wxpython.org/docs/api/wx.GraphicsPath-class.html
• [varLib.merger] Fixed issue with recombining multiple PairPosFormat2 subtables (#888)
• [varLib] Do not encode gvar deltas that are all zeroes, or if all values are smaller than tolerance.
• [ttLib] _TTGlyphSet glyphs now also have height and tsb (top side bearing) attributes from the vmtx table, if present.
• [glyf] In GlyphCoordintes class, added __bool__ / __nonzero__ methods, and array property to get raw array.
• [ttx] Support reading TTX files with BOM (#896)
• [CFF2] Fixed the reporting of the number of regions in the font.

3.9.1 (released 2017-03-20)

• [varLib.merger] Fixed issue while recombining multiple PairPosFormat2 subtables if they were split because of offset overflows (9798c30).
• [varLib.merger] Only merge multiple PairPosFormat1 subtables if there is at least one of the fonts with a non-empty Format1 subtable (0f5a46b).
• [varLib.merger] Fixed IndexError with empty ClassDef1 in PairPosFormat2 (aad0d46).
• [varLib.merger] Avoid reusing Class2Record (mutable) objects (e6125b3).
• [varLib.merger] Calculate ClassDef1 and ClassDef2's Format when merging PairPosFormat2 (23511fd).
• [macUtils] Added missing ttLib import (b05f203).

3.9.0 (released 2017-03-13)

• [feaLib] Added (partial) support for parsing feature file comments # ... appearing in between statements (#879).
• [feaLib] Cleaned up syntax tree for FeatureNames.
• [ttLib] Added support for reading/writing CFF2 table (thanks to @readroberts at Adobe), and TTFA (ttfautohint) table.
• [varLib] Fixed regression introduced with 3.8.0 in the calculation of NumShorts, i.e. the number of deltas in ItemVariationData's delta sets that use a 16-bit representation (b2825ff).

3.8.0 (released 2017-03-05)

• New pens: MomentsPen, StatisticsPen, RecordingPen, and TeePen.
• [misc] Added new fontTools.misc.symfont module, for symbolic font statistical analysis; requires sympy (http://www.sympy.org/en/index.html)
• [varLib] Added experimental fontTools.varLib.interpolatable module for finding wrong contour order between different masters
• [varLib] designspace.load() now returns a dictionary, instead of a tuple, and supports <axes> element (#864); the 'masters' item was renamed 'sources', like the <sources> element in the designspace document
• [ttLib] Fixed issue with recalculating head modified timestamp when saving CFF fonts
• [ttLib] In TupleVariation, round deltas before compiling (#861, fixed #592)
• [feaLib] Ignore duplicate glyphs in classes used as MarkFilteringSet and MarkAttachmentType (#863)
• [merge] Changed the gasp table merge logic so that only the one from the first font is retained, similar to other hinting tables (#862)
• [Tests] Added tests for the varLib package, as well as test fonts from the "Annotated OpenType Specification" (AOTS) to exercise ttLib's table readers/writers (<https://github.com/adobe-type-tools/aots>)

3.7.2 (released 2017-02-17)

• [subset] Keep advance widths when stripping ".notdef" glyph outline in CID-keyed CFF fonts (#845)
• [feaLib] Zero values now produce the same results as makeotf (#633, #848)
• [feaLib] More compact encoding for “Contextual positioning with in-line single positioning rules” (#514)

3.7.1 (released 2017-02-15)

• [subset] Fixed issue with --no-hinting option whereby advance widths in Type 2 charstrings were also being stripped (#709, #343)
• [feaLib] include statements now resolve relative paths like makeotf (#838)
• [feaLib] table name now handles Unicode codepoints beyond the Basic Multilingual Plane, also supports old-style MacOS platform encodings (#842)
• [feaLib] correctly escape string literals when emitting feature syntax (#780)

3.7.0 (released 2017-02-11)

• [ttx, mtiLib] Preserve ordering of glyph alternates in GSUB type 3 (#833).
• [feaLib] Glyph names can have dashes, as per new AFDKO syntax v1.20 (#559).
• [feaLib] feaLib.Parser now needs the font's glyph map for parsing.
• [varLib] Fix regression where GPOS values were stored as 0.
• [varLib] Allow merging of class-based kerning when ClassDefs are different

3.6.3 (released 2017-02-06)

• [varLib] Fix building variation of PairPosFormat2 (b5c34ce).
• Populate defaults even for otTables that have postRead (e45297b).
• Fix compiling of MultipleSubstFormat1 with zero 'out' glyphs (b887860).

3.6.2 (released 2017-01-30)

• [varLib.merger] Fixed "TypeError: reduce() of empty sequence with no initial value" (3717dc6).

3.6.1 (released 2017-01-28)

• [py23] Fixed unhandled exception occurring at interpreter shutdown in the "last resort" logging handler (972b3e6).
• [agl] Ensure all glyph names are of native 'str' type; avoid mixing 'str' and 'unicode' in TTFont.glyphOrder (d8c4058).
• Fixed inconsistent title levels in README.rst that caused PyPI to incorrectly render the reStructuredText page.

3.6.0 (released 2017-01-26)

• [varLib] Refactored and improved the variation-font-building process.
• Assembly code in the fpgm, prep, and glyf tables is now indented in XML output for improved readability. The instruction element is written as a simple tag if empty (#819).
• [ttx] Fixed 'I/O operation on closed file' error when dumping multiple TTXs to standard output with the '-o -' option.
• The unit test modules (*_test.py) have been moved outside of the fontTools package to the Tests folder, thus they are no longer installed (#811).

3.5.0 (released 2017-01-14)

• Font tables read from XML can now be written back to XML with no loss.
• GSUB/GPOS LookupType is written out in XML as an element, not comment. (#792)
• When parsing cmap table, do not store items mapped to glyph id 0. (#790)
• [otlLib] Make ClassDef sorting deterministic. Fixes #766 (7d1ddb2)
• [mtiLib] Added unit tests (#787)
• [cvar] Implemented cvar table
• [gvar] Renamed GlyphVariation to TupleVariation to match OpenType terminology.
• [otTables] Handle gracefully empty VarData.Item array when compiling XML. (#797)
• [varLib] Re-enabled generation of HVAR table for fonts with TrueType outlines; removed --build-HVAR command-line option.
• [feaLib] The parser can now be extended to support non-standard statements in FEA code by using a customized Abstract Syntax Tree. See, for example, feaLib.builder_test.test_extensions and baseClass.feax (#794, fixes #773).
• [feaLib] Added feaLib command to the 'fonttools' command-line tool; applies a feature file to a font. fonttools feaLib -h for help.
• [pens] The T2CharStringPen now takes an optional roundTolerance argument to control the rounding of coordinates (#804, fixes #769).
• [ci] Measure test coverage on all supported python versions and OSes, combine coverage data and upload to https://codecov.io/gh/fonttools/fonttools (#786)
• [ci] Configured Travis and Appveyor for running tests on Python 3.6 (#785, 55c03bc)
• The manual pages installation directory can be customized through FONTTOOLS_MANPATH environment variable (#799, fixes #84).
• [Snippets] Added otf2ttf.py, for converting fonts from CFF to TrueType using the googlei18n/cu2qu module (#802)

3.4.0 (released 2016-12-21)

• [feaLib] Added support for generating FEA text from abstract syntax tree (AST) objects (#776). Thanks @mhosken
• Added agl.toUnicode function to convert AGL-compliant glyph names to Unicode strings (#774)
• Implemented MVAR table (b4d5381)

3.3.1 (released 2016-12-15)

• [setup] We no longer use versioneer.py to compute fonttools version from git metadata, as this has caused issues for some users (#767). Now we bump the version strings manually with a custom release command of setup.py script.

3.3.0 (released 2016-12-06)

• [ttLib] Implemented STAT table from OpenType 1.8 (#758)
• [cffLib] Fixed decompilation of CFF fonts containing non-standard key/value pairs in FontDict (issue #740; PR #744)
• [py23] minor: in round3 function, allow the second argument to be None (#757)
• The standalone sstruct and xmlWriter modules, deprecated since vesion 3.2.0, have been removed. They can be imported from the fontTools.misc package.

3.2.3 (released 2016-12-02)

• [py23] optimized performance of round3 function; added backport for py35 math.isclose() (9d8dacb)
• [subset] fixed issue with 'narrow' (UCS-2) Python 2 builds and --text/--text-file options containing non-BMP chararcters (16d0e5e)
• [varLib] fixed issuewhen normalizing location values (8fa2ee1, #749)
• [inspect] Made it compatible with both python2 and python3 (167ee60, #748). Thanks @pnemade

3.2.2 (released 2016-11-24)

• [varLib] Do not emit null axes in fvar (1bebcec). Thanks @robmck-ms
• [varLib] Handle fonts without GPOS (7915a45)
• [merge] Ignore LangSys if None (a11bc56)
• [subset] Fix subsetting MathVariants (78d3cbe)
• [OS/2] Fix "Private Use (plane 15)" range (08a0d55). Thanks @mashabow

3.2.1 (released 2016-11-03)

• [OS/2] fix checking fsSelection bits matching head.macStyle bits
• [varLib] added --build-HVAR option to generate HVAR table for fonts with TrueType outlines. For CFF2, it is enabled by default.

3.2.0 (released 2016-11-02)

• [varLib] Improve support for OpenType 1.8 Variable Fonts:
• Implement GDEF's VariationStore
• Implement HVAR/VVAR tables
• Partial support for loading MutatorMath .designspace files with varLib.designspace module
• Add varLib.models with Variation fonts interpolation models
• Implement GSUB/GPOS FeatureVariations
• Initial support for interpolating and merging OpenType Layout tables (see varLib.interpolate_layout and varLib.merger modules)
• [API change] Change version to be an integer instead of a float in XML output for GSUB, GPOS, GDEF, MATH, BASE, JSTF, HVAR, VVAR, feat, hhea and vhea tables. Scripts that set the Version for those to 1.0 or other float values also need fixing. A warning is emitted when code or XML needs fix.
• several bug fixes to the cffLib module, contributed by Adobe's @readroberts
• The XML output for CFF table now has a 'major' and 'minor' elements for specifying whether it's version 1.0 or 2.0 (support for CFF2 is coming soon)
• [setup.py] remove undocumented/deprecated extra_path Distutils argument. This means that we no longer create a "FontTools" subfolder in site-packages containing the actual fontTools package, as well as the standalone xmlWriter and sstruct modules. The latter modules are also deprecated, and scheduled for removal in upcoming releases. Please change your import statements to point to from fontTools.misc import xmlWriter and from fontTools.misc import sstruct.
• [scripts] Add a 'fonttools' command-line tool that simply runs fontTools.* sub-modules: e.g. fonttools ttx, fonttools subset, etc.
• [hmtx/vmts] Read advance width/heights as unsigned short (uint16); automatically round float values to integers.
• [ttLib/xmlWriter] add 'newlinestr=None' keyword argument to TTFont.saveXML for overriding os-specific line endings (passed on to XMLWriter instances).
• [versioning] Use versioneer instead of setuptools_scm to dynamically load version info from a git checkout at import time.
• [feaLib] Support backslash-prefixed glyph names.

3.1.2 (released 2016-09-27)

• restore Makefile as an alternative way to build/check/install
• README.md: update instructions for installing package from source, and for running test suite
• NEWS: Change log was out of sync with tagged release

3.1.1 (released 2016-09-27)

• Fix ttLibVersion attribute in TTX files still showing '3.0' instead of '3.1'.
• Use setuptools_scm to manage package versions.

3.1.0 (released 2016-09-26)

• [feaLib] New library to parse and compile Adobe FDK OpenType Feature files.
• [mtiLib] New library to parse and compile Monotype 'FontDame' OpenType Layout Tables files.
• [voltLib] New library to parse Microsoft VOLT project files.
• [otlLib] New library to work with OpenType Layout tables.
• [varLib] New library to work with OpenType Font Variations.
• [pens] Add ttGlyphPen to draw to TrueType glyphs, and t2CharStringPen to draw to Type 2 Charstrings (CFF); add areaPen and perimeterPen.
• [ttLib.tables] Implement 'meta' and 'trak' tables.
• [ttx] Add --flavor option for compiling to 'woff' or 'woff2'; add --with-zopfli option to use Zopfli to compress WOFF 1.0 fonts.
• [subset] Support subsetting 'COLR'/'CPAL' and 'CBDT'/'CBLC' color fonts tables, and 'gvar' table for variation fonts.
• [Snippets] Add symfont.py, for symbolic font statistics analysis; interpolatable.py, a preliminary script for detecting interpolation errors; {merge,dump}_woff_metadata.py.
• [classifyTools] Helpers to classify things into classes.
• [CI] Run tests on Windows, Linux and macOS using Appveyor and Travis CI; check unit test coverage with Coverage.py/Coveralls; automatic deployment to PyPI on tags.
• [loggingTools] Use Python built-in logging module to print messages.
• [py23] Make round() behave like Python 3 built-in round(); define round2() and round3().

3.0 (released 2015-09-01)

• Add Snippet scripts for cmap subtable format conversion, printing GSUB/GPOS features, building a GX font from two masters
• TTX WOFF2 support and a -f option to overwrite output file(s)
• Support GX tables: avar, gvar, fvar, meta
• Support feat and gzip-compressed SVG tables
• Upgrade Mac East Asian encodings to native implementation if available
• Add Roman Croatian and Romanian encodings, codecs for mac-extended East Asian encodings
• Implement optimal GLYF glyph outline packing; disabled by default

2.5 (released 2014-09-24)

• Add a Qt pen
• Add VDMX table converter
• Load all OpenType sub-structures lazily
• Add support for cmap format 13.
• Add pyftmerge tool
• Update to Unicode 6.3.0d3
• Add pyftinspect tool
• Add support for Google CBLC/CBDT color bitmaps, standard EBLC/EBDT embedded bitmaps, and SVG table (thanks to Read Roberts at Adobe)
• Add support for loading, saving and ttx'ing WOFF file format
• Add support for Microsoft COLR/CPAL layered color glyphs
• Support PyPy
• Support Jython, by replacing numpy with array/lists modules and removed it, pure-Python StringIO, not cStringIO
• Add pyftsubset and Subsetter object, supporting CFF and TTF
• Add to ttx args for -q for quiet mode, -z to choose a bitmap dump format

2.4 (released 2013-06-22)

• Option to write to arbitrary files
• Better dump format for DSIG
• Better detection of OTF XML
• Fix issue with Apple's kern table format
• Fix mangling of TT glyph programs
• Fix issues related to mona.ttf
• Fix Windows Installer instructions
• Fix some modern MacOS issues
• Fix minor issues and typos

2.3 (released 2009-11-08)

• TrueType Collection (TTC) support
• Python 2.6 support
• Update Unicode data to 5.2.0
• Couple of bug fixes

2.2 (released 2008-05-18)

• ClearType support
• cmap format 1 support
• PFA font support
• Switched from Numeric to numpy
• Update Unicode data to 5.1.0
• Update AGLFN data to 1.6
• Many bug fixes

2.1 (released 2008-01-28)

• Many years worth of fixes and features

2.0b2 (released 2002-??-??)

• Be "forgiving" when interpreting the maxp table version field: interpret any value as 1.0 if it's not 0.5. Fixes dumping of these GPL fonts: http://www.freebsd.org/cgi/pds.cgi?ports/chinese/wangttf
• Fixed ttx -l: it turned out this part of the code didn't work with Python 2.2.1 and earlier. My bad to do most of my testing with a different version than I shipped TTX with :-(
• Fixed bug in ClassDef format 1 subtable (Andreas Seidel bumped into this one).

2.0b1 (released 2002-09-10)

• Fixed embarrassing bug: the master checksum in the head table is now calculated correctly even on little-endian platforms (such as Intel).
• Made the cmap format 4 compiler smarter: the binary data it creates is now more or less as compact as possible. TTX now makes more compact data than in any shipping font I've tested it with.
• Dump glyph names as a separate "GlyphOrder" pseudo table as opposed to as part of the glyf table (obviously needed for CFF-OTF's).
• Added proper support for the CFF table.
• Don't barf on empty tables (questionable, but "there are font out there...")
• When writing TT glyf data, align glyphs on 4-byte boundaries. This seems to be the current recommendation by MS. Also: don't barf on fonts which are already 4-byte aligned.
• Windows installer contributed bu Adam Twardoch! Yay!
• Changed the command line interface again, now by creating one new tool replacing the old ones: ttx It dumps and compiles, depending on input file types. The options have changed somewhat.
• The -d option is back (output dir)
• ttcompile's -i options is now called -m (as in "merge"), to avoid clash with dump's -i.
• The -s option ("split tables") no longer creates a directory, but instead outputs a small .ttx file containing references to the individual table files. This is not a true link, it's a simple file name, and the referenced file should be in the same directory so ttcompile can find them.
• compile no longer accepts a directory as input argument. Instead it can parse the new "mini-ttx" format as output by "ttx -s".
• all arguments are input files
• Renamed the command line programs and moved them to the Tools subdirectory. They are now installed by the setup.py install script.
• Added OpenType support. BASE, GDEF, GPOS, GSUB and JSTF are (almost) fully supported. The XML output is not yet final, as I'm still considering to output certain subtables in a more human-friendly manner.
• Fixed 'kern' table to correctly accept subtables it doesn't know about, as well as interpreting Apple's definition of the 'kern' table headers correctly.
• Fixed bug where glyphnames were not calculated from 'cmap' if it was (one of the) first tables to be decompiled. More specifically: it cmap was the first to ask for a glyphID -> glyphName mapping.
• Switched XML parsers: use expat instead of xmlproc. Should be faster.
• Removed my UnicodeString object: I now require Python 2.0 or up, which has unicode support built in.
• Removed assert in glyf table: redundant data at the end of the table is now ignored instead of raising an error. Should become a warning.
• Fixed bug in hmtx/vmtx code that only occured if all advances were equal.
• Fixed subtle bug in TT instruction disassembler.
• Couple of fixes to the 'post' table.
• Updated OS/2 table to latest spec.

1.0b1 (released 2001-08-10)

• Reorganized the command line interface for ttDump.py and ttCompile.py, they now behave more like "normal" command line tool, in that they accept multiple input files for batch processing.
• ttDump.py and ttCompile.py don't silently override files anymore, but ask before doing so. Can be overridden by -f.
• Added -d option to both ttDump.py and ttCompile.py.
• Installation is now done with distutils. (Needs work for environments without compilers.)
• Updated installation instructions.
• Added some workarounds so as to handle certain buggy fonts more gracefully.
• Updated Unicode table to Unicode 3.0 (Thanks Antoine!)
• Included a Python script by Adam Twardoch that adds some useful stuff to the Windows registry.
• Moved the project to SourceForge.

1.0a6 (released 2000-03-15)

• Big reorganization: made ttLib a subpackage of the new fontTools package, changed several module names. Called the entire suite "FontTools"
• Added several submodules to fontTools, some new, some older.
• Added experimental CFF/GPOS/GSUB support to ttLib, read-only (but XML dumping of GPOS/GSUB is for now disabled)
• Fixed hdmx endian bug
• Added -b option to ttCompile.py, it disables recalculation of bounding boxes, as requested by Werner Lemberg.
• Renamed tt2xml.pt to ttDump.py and xml2tt.py to ttCompile.py
• Use ".ttx" as file extension instead of ".xml".
• TTX is now the name of the XML-based format for TT fonts, and not just an application.

1.0a5

Never released

• More tables supported: hdmx, vhea, vmtx

1.0a3 & 1.0a4

Never released

• fixed most portability issues
• retracted the "Euro_or_currency" change from 1.0a2: it was nonsense!

1.0a2 (released 1999-05-02)

• binary release for MacOS
• genenates full FOND resources: including width table, PS font name info and kern table if applicable.
• added cmap format 4 support. Extra: dumps Unicode char names as XML comments!
• added cmap format 6 support
• now accepts true type files starting with "true" (instead of just 0x00010000 and "OTTO")
• 'glyf' table support is now complete: I added support for composite scale, xy-scale and two-by-two for the 'glyf' table. For now, component offset scale behaviour defaults to Apple-style. This only affects the (re)calculation of the glyph bounding box.
• changed "Euro" to "Euro_or_currency" in the Standard Apple Glyph order list, since we cannot tell from the 'post' table which is meant. I should probably doublecheck with a Unicode encoding if available. (This does not affect the output!)

Fixed bugs: - 'hhea' table is now recalculated correctly - fixed wrong assumption about sfnt resource names

1.0a1 (released 1999-04-27)

• initial binary release for MacOS