v1.52.0

[1.52.0] -- 2020-01-08

Added

• Add uniformtext behavior to bar, funnel, waterfall, pie, funnelarea,
  sunburst and treemap traces [#4420, #4444, #4469]
• Add "pre-computed" q1/median/q3 input signature for box traces [#4432]
• Add support for legend titles [#4386]
• Add legend items for choropleth, choroplethmapbox, cone, densitymapbox,
  heatmap, histogram2d, isosurface, mesh3d, streamtube,
  surface, volume traces [#4386, #4441]
• Add "auto-fitting" behavior to geo subplots via geo.fitbounds attribute [#4419]
• Add support for custom geojson geometries in choropleth
  and scattergeo traces [#4419]
• Add "exclusive" and "inclusive" quartile-computing algorithm to box traces
  via quartilemethod attribute [#4432]
• Add insidetextorientation attribute to pie and sunburst traces [#4420]
• Add intensitymode to allow cell intensity values in mesh3d traces [#4446]
• Add featureidkey attribute to choroplethmapbox, choropleth
  and scattergeo traces [#4419]
• Add geo.visible shortcut attribute [#4419]
• Add coordinates of mapbox subplot view as a derived property in plotly_relayout
  event data [#4413]
• Add modebar buttons zoomInMapbox and zoomOutMapbox [#4398]
• Add support for typed array in groupby transforms groups [#4410]
• Add notifyOnLogging config option that allows log/warn/error messages
  to show up in notifiers pop-ups [#4464]
• Enable loading locale bundles before plotly.js bundles [#4453]
• Add Korean ko locale [#4315]

Changed

• Skip mapbox subplot map position updates while panning/zooming removing
  potential stuttering [#4418]
• Optimize mapbox raster layout layer updates [#4418]
• Improve sunburst and treemap click events behavior [#4454]
• Improve attribute description of sunburst/treemap outsidetextfont [#4463]
• Update source and dist file headers to 2020 [#4457]

Fixed

• Fix streamtube traces with numeric string coordinates
  (bug introduced in 1.51.0) [#4431]
• Correctly handle different data orders in isosurface and volume traces [#4431]
• Fix symbol numbers in scattergl and splom traces [#4465]
• Fix coloraxis colorbars for sunburst and treemap with
  values colorscales [#4444]
• Fix inside text fitting for bar, funnel and waterfall traces with
  set textangle [#4444]
• Fix handling of invalid values and zero totals for pie and funnelarea [#4416]
• Fix colorbar of reversescale colorscales of heatmap-coloring contours [#4437]
• Fix colorbar templating for "non-root" colorscales [#4470]
• Fix event data and some hover templates for x/y/z heatmap + contour [#4472]
• Fix "toggleothers" behavior for graphs with traces not in legend [#4406]
• Fix histogram bingroup logic when calendars module is not registered [#4439]
• Fix "almost equal" branchvalue: 'total' partial sum cases [#4442]
• Fix handling of treemap pathbar.textfont [#4444]