Plotly

Added
- Add `cumulative` histogram attributes to generate Cumulative Distribution
Functions [[1189](https://github.com/plotly/plotly.js/pull/1189)]
- Add `standoff` attribute for annotations to move the arrowhead away from the
point it's marking [[1265](https://github.com/plotly/plotly.js/pull/1265)]
- Add `clicktoshow`, `xclick` and `yclick` attributes for annotations to
show/hide annotations on click [[1265](https://github.com/plotly/plotly.js/pull/1265)]
- Support data-referenced annotation in gl2d subplots [[1301](https://github.com/plotly/plotly.js/pull/1301), [#1319](https://github.com/plotly/plotly.js/pull/1319)]
- Honor `fixedrange: false` in y-axes anchored to xaxis with range slider
[[1261](https://github.com/plotly/plotly.js/pull/1261)]
- Add fallbacks for IE9 so that all cartesian traces can render without any
polyfill [[1297](https://github.com/plotly/plotly.js/pull/1297), [#1299](https://github.com/plotly/plotly.js/pull/1299)]

Changed
- Adapt plot schema output for plotly.py 2.0 [[1292](https://github.com/plotly/plotly.js/pull/1292)]
- Bump `mouse-change` dep to `^1.4.0` [[1305](https://github.com/plotly/plotly.js/pull/1305)]
- Improve performance in `visible` toggling for `scattergl` [[1300](https://github.com/plotly/plotly.js/pull/1300)]

Fixed
- Fix XSS vulnerability in trace name on hover [[1307](https://github.com/plotly/plotly.js/pull/1307)]
- Fix ternary and geo subplot with `visible: false` first trace [[1291](https://github.com/plotly/plotly.js/pull/1291)]
- Fix opacity for `mode: 'lines'` items in legend [[1204](https://github.com/plotly/plotly.js/pull/1204)]
- Fix legend items style for bar trace with marker arrays [[1289](https://github.com/plotly/plotly.js/pull/1289)]
- Fix range slider svg / pdf and eps image exports [[1306](https://github.com/plotly/plotly.js/pull/1306)]
- Fix scattergl `visible: false` traces with empty data arrays [[1300](https://github.com/plotly/plotly.js/pull/1300)]
- Fix a few contour trace edge cases [[1309](https://github.com/plotly/plotly.js/pull/1309)]
- Updatemenus buttons now render above sliders [[1302](https://github.com/plotly/plotly.js/pull/1302)]
- Add fallback for categorical histogram on linear axes [[1284](https://github.com/plotly/plotly.js/pull/1284)]
- Allow style fields in sub and sup text [[1288](https://github.com/plotly/plotly.js/pull/1288)]

Fixed
- Fix zoom behavior on transformed traces [[1257](https://github.com/plotly/plotly.js/pull/1257)]
- Compute axis auto-range after transform operation [[1260](https://github.com/plotly/plotly.js/pull/1260)]
- Fix contour trace blowing up on zoom [591]
- Fix `scattermapbox` and `scattergeo` handling of blank strings `text` [[1283](https://github.com/plotly/plotly.js/pull/1283)]
- Lock `mouse-change1.3.0` fixing 3D hover labels on fresh `npm install`
[[1281](https://github.com/plotly/plotly.js/pull/1281)]

Fixed
- Fix handling of calendar in `filter` transforms where distinct calendars can
now be set for both the `target` and `value` [[1253](https://github.com/plotly/plotly.js/pull/1253)]
- Make `Plotly.addFrames` skip over non-plain-objects inputs [[1254](https://github.com/plotly/plotly.js/pull/1254)]
- Make `Plots.graphJson` aware of `frames` [[1255](https://github.com/plotly/plotly.js/pull/1255)]

Fixed
- Fix `ms2datetime` routine for Chinese calendar [[1252](https://github.com/plotly/plotly.js/pull/1252)]
- Fix `tickformat` for world calendars [[1252](https://github.com/plotly/plotly.js/pull/1252)]

Added
- Bar labels via `text` and `textposition` [[1159](https://github.com/plotly/plotly.js/pull/1159)]
- Add support for 16 non-gregorian calendars for date inputs and display [[1220](https://github.com/plotly/plotly.js/pull/1220),
[1230](https://github.com/plotly/plotly.js/pull/1230), [#1237](https://github.com/plotly/plotly.js/pull/1237)]
- Add support for ISO-8601 timestamps [[1194](https://github.com/plotly/plotly.js/pull/1194)]
- Extend histogram bin auto-shifting algorithm to date axes [[1201](https://github.com/plotly/plotly.js/pull/1201)]
- Trace type `heatmapgl` is now included in the main plotly.js bundle [[1197](https://github.com/plotly/plotly.js/pull/1197)]

Changed
- Linearize date coordinates using UTC rather than local milliseconds [[1194](https://github.com/plotly/plotly.js/pull/1194)]

Fixed
- Fix wrongly computed date positions around daylight savings time [[1194](https://github.com/plotly/plotly.js/pull/1194)]
- Fix erroneous traces in multi-subplot layout containing fill-to scatter
traces (and plotly.py violin plots) [[1198](https://github.com/plotly/plotly.js/pull/1198)]
- Fix clip path URL on pages with query hashes [[1203](https://github.com/plotly/plotly.js/pull/1203)]
- Ensure that numeric frame name are handle correctly [[1236](https://github.com/plotly/plotly.js/pull/1236)]
- Fallback for manual manipulation of slider/frames [[1233](https://github.com/plotly/plotly.js/pull/1233)]

Fixed
- Fix 1.20.0 regression in handling numerical strings including commas and spaces
[[1185](https://github.com/plotly/plotly.js/pull/1185)]
- Fix 1.20.0 regression involving date histograms [[1186](https://github.com/plotly/plotly.js/pull/1186)]
- Fix numerous `tickvals` and `ticktext` edge cases [[1191](https://github.com/plotly/plotly.js/pull/1191)]