Add new number formatting and text alignment options by upgrading d3.format method from d3@v3 to version 1.4.5 of d3-format module [#5125, #5842]
Add "satellite" and several other projection types to geo subplots [#5801]
Improve rendering of scattergl, splom and parcoords by implementing plotGlPixelRatio for those traces [#5500]
Changed
Upgrade d3.geo method from d3@v3 to version 1.12.1 of d3-geo module and version 2.9.0 of d3-geo-projection module [#5112]
Upgrade d3.interpolate method from d3@v3 to version 1.4.0 of d3-interpolate module in icicle, indicator, parcats, sunburst and treemap [#5826]
Upgrade regl-scatter2d, regl-line2d and regl-error2d modules to use version 1.1.0 of to-float32 module to improve the performance [#5786], with thanks to @Seranicio for the contribution!
Edit the type of constraintrange in parcoords trace to pass validation [#5673]
Sort plot-schema and add test to track plot-schema changes [#5776]
Preview CHANGELOG when building dist on master [#5780, #5808]
Preview plot-schema changes between releases when building dist on master [#5814]
Display changes made to package.json between versions and add identical tags to draft bundles created by publish-dist job on CircleCI [#5815]
Simplify devtool by relying on XMLHttpRequest instead of d3.json [#5832]
Update CONTRIBUTING guidelines on how to submit pull requests and generate new baseline [#5791, [#5792]]
Fixed
Fix unknown filename when exporting charts using new versions of Safari [#5609, 5838], with thanks to @rlreamy for the contribution!
Improve README for ES6 module import [#5779], with thanks to @andreafonso for the contribution!
Position hover in respect to the average of values in (x|y) unified modes (regression introduced in 2.0.0) [#5845]
Fix hover with period alignment points and improve positioning of spikes and unified hover label
in order not to obscure referring data points and fit inside plotting area [#5846]
Allow clickable legend group titles when group has no pie-like traces [#5771]
