v1.41.3

Fixed

• Fix handling of hover text in barpolar traces [#3040]
• Fix scatterpolar[gl] text placement in hover label [#3040]
• Fix pie trace support for individual stroke width values [#3030]
• Fix handling of CSS max-width and max-height in auto-size routine [#3033]
• Rotate hover labels when hovermode: 'y' and a single trace produces multiple
  labels [#3043]
• Rotate hover labels when hovermode: 'closest' and multiple labels are
  generated including one from an horizontal trace [#3043]
• Fix hover label coloring on white bgcolor [#3048]
• Do not coerce nor validate polar?.bar* attributes on
  subplots w/o visible barpolar traces [#3023]
• Fix legacy polar attribute descriptions [#3023]

v1.41.2

Fixed

• Fix two-sided zoombox -> double-click -> one-sided zoombox behavior [#3028]

v1.41.1

Fixed

• Bring back hover labels on "touch" hover (bug introduced in 1.29.0) [#2997]
• Fix MathJax rendering in legends [#3018]
• Fix fill and layering for multiple stack-groups and unstacked scatter traces [#3005]
• Fix removal of scatter traces with set stackgroup [#3005]
• Fix stacked area gap insertion edge case [#3017]
• Fix zeroline logic for splom-generated axes [#3015]
• Fix error_x and error_y on scatter3d w/o error_z [#3011]
• Fix scatter3d error bars on log axes [#2992]
• Fix Plotly.react when updating geo axis dtick [#3016]
• Fix polar.hole=1 case [#3021]
• Fix handling of polar.sector that span more than 360 degrees [#3021]

v1.41.0

Added

• Enable selection by clicking on points via new layout attribute clickmode
  and flag 'select' [#2944]
• Add stacked area charts via new attributes stackgroup and stackgaps in
  scatter traces [#2960]
• Add barpolar traces - which replace and augment area traces [#2954]
• Add polar.hole to punch hole at the middle of polar subplot offsetting the
  start of the radial range [#2977, #2996]
• Add an 'inner' radial axis drag box on polar subplots [#2977]
• Add {responsive: true} plot config option [#2974]
• Emit plotly_webglcontextlost event on WebGL context lost [#2986]
• Support all numbered HTML entities (decimal and hex) in text elements [#2932]
• Add Welsh (cy) locale [#2945]

Changed

• Attribute meta information is now stripped be stripped out of bundles (made
  with bundlers that support browserify transforms) by default [#1584]
• Draw polar axis ticks above polar axis lines [#2977]
• Improve ordering of trace hover labels for matching positions [#2960]
• Speed polar subplot radial drag interactions [#2954]
• Improve pseudo-html conversion performance [#2932]
• Bump regl-splom requirement to ^1.0.4 [#2956]
• Bump glslify requirement to ^6.3.1 [#2990]
• Use gl-text instead of @etpinard/gl-text [#2956]

Fixed

• Fix scatter ordering in inner SVG <g> on some restyle calls [#2978]
• Fix cartesian axis autorange edge cases [#2960]
• Fix double-decoding of some HTML entities in text nodes [#2927]
• Fix scattergl line traces rendered after non-line traces [#2990]
• Fix legend positioning on graphs with very large margins [#2983]
• Fix rendering of ternary subplots fix with showticklabels: false [#2993]
• Fix show/hide updates of tick and tick labels on ternary subplots [#2993]
• Fix handling of multi-selections in ternary subplots [#2944]
• Fix sankey hover under hovermode: false [#2949]
• Fix sankey positioning for non-default domain.x values [#2984]
• Fix type: 'date' polar radial axes [#2954]
• Fix send-to-cloud modebar buttons on graphs with typed arrays [#2995]
• Fix handling of custom transforms that make their own data arrays in
  Plotly.react[#2973]
• Fix missing violin and colorbar attributes in gd._fullData [#2850]

v1.40.1

Changed

• Bump browserify to v16 [#2923]
• Bump glslify to v6.2.1 [#2923]
• Use color-normlize@1.3.0 throughout code base [#2923]

Fixed

• Fix logic for hiding zero lines when they conflict with axis lines [#2936]
• Fix exponentformat values 'e' and 'E' on log axes [#2921]
• Fix dynamic layer ordering of heatmap and carpet traces [#2917]
• Fix Plotly.downloadImage when using graph id or figure object
  as first argument [#2931]
• Fix regl-based rendering when WebGL buffer dimensions don't match canvas
  dimensions [#2939]

v1.40.0

Added

• Allow contour, contourcarpet and histogram2dcontour to have
  corresponding legend items using showlegend [#2891, #2914]
• Add scatterpolar and scatterpolargl attributes r0, dr, theta0 and
  dtheta [#2895]
• Add layout attributes piecolorway and extendpiecolors
  for more control over pie colors [#2870]
• Add splom attribute dimensions[i].axis.type to easily override axis type
  in splom-generated axes [#2899]
• Add support for on-graph text in scatterpolargl traces [#2895]

Changed

• Use derequire browserify plugin to make bundling distributed npm package
  with browserify possible [#2905]
• Speed up cartesian axis autorange edits (and thus double-click interactions) [#2823]
• Do not clear WebGL context when scattergl graph has no visible:true
  traces, which speeds up e.g. legend interactions [#2860]
• Compute data extremes per trace, which improves performance in some cases [#2860]
• Use <linearGradient> to render filled colorbars [#2910, #2914]
• Rename trace module setPositions methods crossTraceCalc [#2868]
• Use regl@1.3.7 [#2863]

Fixed

• Fix scalar marker.size bounds in legend items [#2840]
• Fix positioning of legend symbols for traces with fills [#2891]
• Fix scattergl select -> double-click -> pan behavior [#2815]
• Fix scattergl marker for IE11 [#2863]
• Fix inheritance of explicit pie colors by later traces [#2870]
• Fix layer ordering on graphs with multiple contour traces with heatmap
  coloring [#2891]
• Fix layer ordering on visible toggling for contour-like traces [#2891]
• Fix cases where colorbars would be drawn over its bounds [#2910]
• Fix tickwidth edits on ohlc traces [#2823]
• Fix labels on splom-generated axes with categorical data [#2899]
• Fix handling of splom dimensions on axes of conflicting types [#2899]
• Fix splom trace visible edits [#2860]
• Fix splom select -> double-click -> pan behavior [#2899]
• Fix scatterpolargl behavior during angular and radial drag interactions [#2888]
• Fix handling of auto date ticks below our 100 microseconds limit [#2912]
• Fix scatter3d attributes which had incorrectly labeled textposition
  and textfont.family as arrayOk and contained unimplemented line.showscale
  and line.colorbar [#2879]
• Fix scattergl and scatterpolargl attribute declarations for hoveron [#2895]

v1.39.4

Fixed

• Fix tenths of milliseconds handling in old numeric date data
  (bug introduced in 1.21.0) [#2847]
• Fix yaxis overlaying yaxis2 layouts
  (bug introduced in 1.39.3) [#2857]

v1.39.3

Fixed

• Fix overlaying subplot configuration relayouts [#2831]
• Fix trace toggling from position-editable horizontal legends [#2829]
• Fix [un]selected.marker.opacity settings on scattergeo traces [#2827]
• Fix selections on some Robinson projections [#2827]

v1.39.2

Fixed

• Fix scattergl selection after resize relayouts [#2801]
• Fix scattergl layout replot edits [#2793]
• Fix cartesian axis range animations (bug introduced in 1.37.0) [#2788]
• Fix contour labels that require thousands suffixes [#2806]
• Fix 'legendonly' legend items link to array marker.symbol [#2816]
• Fix handling of duplicate points under line.simplify [#2814]
• Fix transform removal via Plotly.react [#2805]
• Fix out-of-subplot scroll zoom on some geo projection types [#2811]
• Fix hover label in RTL pages [#2790]
• Reduce minified bundle back to their 1.39.0 sizes [#2792]

v1.39.1

Fixed

• Fix mapbox subplots in our minified bundles (bug introduced in 1.39.0) [#2789]
• Fix box and violin traces inner parts removal (bug introduced in 1.37.0) [#2785]