v1.53.0

Added

• Introduce rangebreaks on date axes mainly thanks to [#4614] with API revision & improvements in
  [#4639, #4641, #4644, #4649, #4652, #4653, #4660, #4661, #4670, #4677, #4684, #4688, #4695, #4696, #4698, #4699]
• Introduce "(x|y) unified" hovermode [#4620, #4664, #4669, #4687]
• Add "hovered data" mode to spikesnap [#4665]
• Add "full-json" export format to Plotly.toImage and Plotly.dowloadImage [#4593]
• Add node.customdata and link.customdata to sankey traces [#4621]
• Add opacityscale for surface traces [#4480]

Changed

• Improve contour labels (add extra pad) and correct minus sign [#4540]
• Improve sizing text inside pie and sunburst (add extra pad) [#4519]
• Improve display of spikelines when spikedistance is set to -1 [#4637]
• Improve compare hovermode to include all points at same coordinate [#4664]
• Improve histogram hover labels (harmonize start & end values) [#4662]
• Display new colors on Plotly's logo [#4691]
• Update links & descriptions to Chart Studio Cloud and plotly.com website [#4694]
• Update contributing guidelines & add info about trace module architecture [#4624]
• Require config.plotlyServerURL to be set for Chart Studio export [#4690]

Fixed

• Fix Plotly.downloadImage to match transparencies in gl3d plots with the on-screen render [#4566]
• Fix amount of transparency applied by opacity in surface traces [#4480, #4642]
• Fix gaps in bar traces (regression introduced in 1.50.0) [#4634]
• Fix gaps in funnel & waterfall [#4663]
• Fix template to set axis type, tickformatstops, tick0, dtick, tickvals and tickmode [#4670, #4685]

v1.52.3

Fixed

• Make identical bundles on different nodes [#4601]
• Fix (regression introduced in 1.52.1) and improve interactive display of narrow points of bar-like traces [#4568]
• Ensure text fits inside sunburst sectors with zero values [#4580]
• Reset splom selectBatch and unselectBatch on updates [#4595]
• Retry different mobile/tablet config to render gl3d subplots on various devices & browsers e.g. Brave [#4549]
• Bump is-mobile to handle iPad Pro & iPad 7th + iOs v13 + Safari [#4548]
• Fix orthographic hover after scroll zoom [#4562]
• Preserve gl3d scene aspectratio after orthographic scroll zoom [#4578]
• Include gl3d scene.aspectmode changes in relayout updates [#4579]
• Apply utf-8 charset in test_dashboard [#4554]

v1.52.2

Fixed

• Handle 'missing' matching axes [#4529]
• Fix hover for mesh3d, isosurface and volume
  when using plotGlPixelRatio > 1 (bug introduced in 1.45.0) [#4534]
• Fix hover of mesh3d traces with facecolor and intensitymode: 'cell' [#4539]
• Fix gl3d rendering on iPad Pro & iPad 7th + iOs v13 + Safari [#4360, #4546]
• Fix pixel-rounding logic for blank bars [#4522]
• Fix pathbar.visible updates in treemap traces [#4516]
• Fix waterfall 'closest' hover when cursor is below the size axis [#4537]
• Fix mapbox layout layer opacity for raster types [#4525]
• Allow 0 in grouby transform nameformat templates [#4526]
• Fix Plotly.validate for valType:'any' attributes [#4526]
• Bump d3-interpolate to v1.4.0 [#4475]
• Bump d3-hierarchy to v1.1.9 [#4475]
• Fix typo in annotation align attribute description [#4528]
• Fix plot_bgcolor and paper_bgcolor attribute description [#4536]
• Fix insidetextorientation description for pie and sunburst traces [#4523]

v1.52.1

[1.52.1] -- 2020-01-13

Fixed

• Fix handling of geo.visible false edge case in order to
  override template.layout.geo.show* attributes [#4483]

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]

v1.51.3

Fixed

• Fix Plotly.Plots.resize edge cases ensuring now that
  its promises always resolve [#4392]
• Fix position of link hover labels in vertical sankey [#4404]
• Fix box autorange for traces with "inverted" notched [#4388]

v1.51.2

Fixed

• Fix texttemplateformatting on axes that define tick prefixes and suffixes [#4380, #4384]
• Fix cmin and cmax computations during color value updates on shared color axes [#4366]
• Fix contour and histogram2dcontour legend item rendering when reversescale is turned on [#4356]
• Fix contour and histogram2dcontour legend item rendering when set to a shared color axis [#4356]
• Handle missing vertexcolor and facecolor during mesh3d rendering [#4353]
• No longer coerce contour and colorscale attributes for mesh3d when not needed [#4346]
• Remove a duplicate function call in parcoords code [#4357]
• Include opacity in the surface trace plot schema [#4344]
• Mention legend.bgcolor default in attribute description [#4362]

v1.51.1

Fixed

• Fix scattergl mising points plot and react (bug introduced in 1.33.0) [#4323]
• Skip non-numeric values in image trace plot [#4325]

v1.51.0

Added

• Add image trace type [#4289, #4307, #4313, #4319]
• Add automargin attribute in pie traces, enabling outside text labels
  to push the margins [#4278]
• Add title.standoff attribute to cartesian axes, setting the
  distance in pixels between the tick labels and the axis title [#4279]
• Add hoverongaps attribute to heatmap and contour traces,
  for suppressing hover labels on missing data [#4291]
• Add args2 attribute to updatemenus buttons which can be used to
  create toggle buttons [#4305]
• Add zh-CN locale [#4276, #4310]

Changed

• Introduce workarounds for "common" (aka axis) hover label clipping
  about the graph's viewport [#4298]
• No longer accept trace domain settings where end is not greater
  than start [#4304]

Fixed

• Fix streamtube coloring and positioning when generated
  with non-xyz grid signatures [#4271]
• Fix trace-type update calls on mapbox subplots [#4295]
• Fix width of box and violin items on log position axes [#4283]
• Fix box/meanline offset for one-sided vertical violin traces [#4314]
• Fix missing gaps in some scattergl line traces [#4316]
• Fix event data during scroll on gl3d subplots with orthographic projections [#4292]
• Handle data with identical positions in cone traces [#4306]
• Handle invalid entry before trying to render treemap trace [#4312]
• Fix heatmap and contour description for connectgaps [#4284]

v1.50.1

Fixed

• Guard against mirrored + automargin anchor:'free' axes (bug introduced in 1.50.0) [#4273]
• Fix streamtube trace starts case when missing a dimension [#4265]
• Fix scattergl performance for drawing legend items of traces with typed arrays [#4268]
• Fix legend item style for markers with typed array colors [#4268]
• Do not attempt to re-hover on exiting subplots [#4269]
• Fix "layout first" transition race condition [#4262]