v3.0.0

• [kernFeatureWriter] Fix missing kerning in InDesign default paragraph composer when no explicit script/language is selected by registering all kerning lookups under DFLT/dflt (#787).
• Use UPEM as the default caretSlopeRise regardless of italicAngle so that only the caretSlopeRun varies in VFs with slnt axis (#804)
• [markFeatureWriter] Disable grouping of mark2base lookups by default, revert to building one lookup per mark class. The old behavior can be reenabled with groupMarkClases=True option (#796, fixes #762 and #591).
• ufo2ft's feature writers now generates variable FEA for kern/mark/mkmk etc. and compile OpenType layout features only once per VF, instead of generating/compiling static features for each master and merge OTL tables with fontTools.varLib (provided that the masters do not have different features.fea). You can disable/force the old behavior by setting compileVariableFeatures=False (#635).
• Added new ftConfig parameter to compile methods that allows to set various fonttools configuration options in the TTFont.cfg (see fontTools.config) (#607).
• Avoid RecursionError when computing components' maximum depth and provide more info if/where cyclical references occur (#813).
• Allow kerning between glyphs associated with different scripts by merging them into one lookup (#808, #811).
• Apply DesignSpace <variable-font>'s "public.fontInfo" lib key to variable fonts (#812, #816).
• [propagateAnchors] Do not propagate anchors to composite mark glyphs that already contain anchors (#802, 815).