Plotly

Fixed
- Fix IE regression introduced in 1.42.0 [[3187](https://github.com/plotly/plotly.js/pull/3187)]
- Fix `parcats` text-shadowing on dark `plot_bgcolor` [[3191](https://github.com/plotly/plotly.js/pull/3191)]
- Fix `scatter3d` text alignment [[3180](https://github.com/plotly/plotly.js/pull/3180)]
- Fix `hoverinfo` flags in attribute descriptions [[3158](https://github.com/plotly/plotly.js/pull/3158)]
- No longer coerce unused `hoverlabel` attribute in `parcoods` [[3158](https://github.com/plotly/plotly.js/pull/3158)]
- No longer coerce `transforms` attributes in traces that don't support them [[3158](https://github.com/plotly/plotly.js/pull/3158)]

Added
- Add `parcats` (aka parallel categories) trace type [[2963](https://github.com/plotly/plotly.js/pull/2963), [#3072](https://github.com/plotly/plotly.js/pull/3072)]
- Add new gl3d tick and title auto-rotation algorithm that limits text
overlaps [[3084](https://github.com/plotly/plotly.js/pull/3084), [#3104](https://github.com/plotly/plotly.js/pull/3104), [#3131](https://github.com/plotly/plotly.js/pull/3131)]
- Add support for reversed-range axes on gl3d subplots [[3141](https://github.com/plotly/plotly.js/pull/3141)]
- Add modebar layout style attributes: `orientation`, `bgcolor`, `color`
and `activecolor` [[3068](https://github.com/plotly/plotly.js/pull/3068), [#3091](https://github.com/plotly/plotly.js/pull/3091)]
- Add `title`, `titleposition` and `titlefont` attributes to `pie` traces [[2987](https://github.com/plotly/plotly.js/pull/2987)]
- Add `hoverlabel.split` attribute to `ohlc` and `candlestick` traces to split
hover labels into multiple pieces [[2959](https://github.com/plotly/plotly.js/pull/2959)]
- Add support for `line.shape` values 'hv', 'vh', 'hvh' and 'vhv'
in `scattergl` traces [[3087](https://github.com/plotly/plotly.js/pull/3087)]
- Add handler for `PlotlyConfig.MathJaxConfig: 'local'` to override our default
MathJax behavior which modifies the global MathJax config on load [[2994](https://github.com/plotly/plotly.js/pull/2994)]
- Add support for graph div as first argument for `Plotly.makeTemplate`
and `Plotly.validateTemplate` [[3111](https://github.com/plotly/plotly.js/pull/3111), [#3118](https://github.com/plotly/plotly.js/pull/3118)]
- Implement trace, node and link hoverinfo for `sankey` traces [[3096](https://github.com/plotly/plotly.js/pull/3096), [#3150](https://github.com/plotly/plotly.js/pull/3150)]
- Implement per-sector textfont settings in `pie` traces [[3130](https://github.com/plotly/plotly.js/pull/3130)]

Changed
- Use new Plotly logo in "Produced with Plotly" modebar button [[3068](https://github.com/plotly/plotly.js/pull/3068)]
- Improve `histogram` autobin algorithm: allow partial bin specification,
deprecate `autobin(x|y)` attributes, force stacked/grouped histograms to match size
and have compatible `start` value [[3044](https://github.com/plotly/plotly.js/pull/3044)]
- Count distinct values for category and date axis auto-type, which
improves the detection of "NaN" string values in numerical data [[3070](https://github.com/plotly/plotly.js/pull/3070)]
- Improve bar and pie textfont color inheritance [[3130](https://github.com/plotly/plotly.js/pull/3130)]
- Improve `splom` first-render, axis range relayout and marker restyle
performance [[3057](https://github.com/plotly/plotly.js/pull/3057), [#3161](https://github.com/plotly/plotly.js/pull/3161)]
- Make `splom` `xaxes` and `yaxes` list always have same length as the trace
`dimensions` regardless of their partial visibilities [[3057](https://github.com/plotly/plotly.js/pull/3057)]
- Improve axis `overlaying` documentation [[3082](https://github.com/plotly/plotly.js/pull/3082)]

Fixed
- Fix `gl3d` subplots on tablets [[3088](https://github.com/plotly/plotly.js/pull/3088)]
- Fix responsive behavior under flexbox and grid CSS [[3056](https://github.com/plotly/plotly.js/pull/3056), [#3090](https://github.com/plotly/plotly.js/pull/3090), [#3122](https://github.com/plotly/plotly.js/pull/3122)]
- Fix relayout calls turning back `autosize` on [[3120](https://github.com/plotly/plotly.js/pull/3120)]
- Fix MathJax rendering (for recent versions of MathJax) [[2994](https://github.com/plotly/plotly.js/pull/2994)]
- Fix `scattergl` update on graphs with fractional computed dimensions [[3132](https://github.com/plotly/plotly.js/pull/3132)]
- Fix `scattergl` symbols in MS Edge [[2750](https://github.com/plotly/plotly.js/pull/2750)]
- Fix `scattergl` selections on overlaying axes [[3067](https://github.com/plotly/plotly.js/pull/3067)]
- Fix `scattergl` `tozero` fills with bad values [[3087](https://github.com/plotly/plotly.js/pull/3087), [#3168](https://github.com/plotly/plotly.js/pull/3168)]
- Fix `scattergl` fill layer ordering [[3087](https://github.com/plotly/plotly.js/pull/3087)]
- Fix `scattergl` lines on reversed-range axes [[3078](https://github.com/plotly/plotly.js/pull/3078)]
- Fix axis auto-type routine for boolean data [[3070](https://github.com/plotly/plotly.js/pull/3070)]
- Fix `splom` axis placement when the diagonal is missing [[3057](https://github.com/plotly/plotly.js/pull/3057)]
- Fix line `restyle` calls on `parcoords` traces [[3178](https://github.com/plotly/plotly.js/pull/3178)]
- Fix `parcoods` rendering after `hovermode` relayout calls [[3123](https://github.com/plotly/plotly.js/pull/3123)]
- Fix WebGL warnings for `scatter3d` traces with blank text items [[3171](https://github.com/plotly/plotly.js/pull/3171), [#3177](https://github.com/plotly/plotly.js/pull/3177)]
- Fix WebGL warnings for `scatter3d` trace with empty lines [[3174](https://github.com/plotly/plotly.js/pull/3174)]
- Fix rendering of `scatter3d` lines for certain scene angles [[3163](https://github.com/plotly/plotly.js/pull/3163)]
- Fix handling of large pad values in `sankey` traces [[3143](https://github.com/plotly/plotly.js/pull/3143)]
- Fix `scatterpolargl` to `scatterpolar` toggling [[3098](https://github.com/plotly/plotly.js/pull/3098)]
- Fix `scatterpolargl` axis-autorange padding [[3098](https://github.com/plotly/plotly.js/pull/3098)]
- Fix `bar` text position for traces with set `base` [[3156](https://github.com/plotly/plotly.js/pull/3156)]
- Fix `bar` support for typed arrays for `width` and `offset` attributes [[3169](https://github.com/plotly/plotly.js/pull/3169)]
- Fix aggregate transforms with bad group values [[3093](https://github.com/plotly/plotly.js/pull/3093)]
- Fix transforms operating on auto-invisible traces [[3139](https://github.com/plotly/plotly.js/pull/3139)]
- Fix templating for polar and carpet axes [[3092](https://github.com/plotly/plotly.js/pull/3092), [#3095](https://github.com/plotly/plotly.js/pull/3095)]
- Ignore invalid trace indices in restyle and update [[3114](https://github.com/plotly/plotly.js/pull/3114)]
- Fix grid style `relayout` calls on graph with large `splom` traces [[3067](https://github.com/plotly/plotly.js/pull/3067)]
- Fix logging on some old browsers [[3137](https://github.com/plotly/plotly.js/pull/3137)]
- Remove erroneous warning `WARN: unrecognized full object value` when
relayouting array containers [[3053](https://github.com/plotly/plotly.js/pull/3053)]

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

Fixed
- Fix two-sided zoombox -> double-click -> one-sided zoombox behavior [[3028](https://github.com/plotly/plotly.js/pull/3028)]

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

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

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

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