Plotly

Added
- Add `table` trace type [[2030](https://github.com/plotly/plotly.js/pull/2030)]
- Add `geo.center` making geo views fully reproducible using layout attributes [[2030](https://github.com/plotly/plotly.js/pull/2030)]
- Add lasso and select-box drag modes to `scattergeo` and `choropleth` traces
[[2030](https://github.com/plotly/plotly.js/pull/2030)]
- Add lasso and select-box drag modes to `bar` and `histogram` traces [[2045](https://github.com/plotly/plotly.js/pull/2045)]
- Add `scale` option to `Plotly.toImage` and `Plotly.downloadImage` [[1979](https://github.com/plotly/plotly.js/pull/1979)]
- Add `plot-schema.json` to `dist/`[[1999](https://github.com/plotly/plotly.js/pull/1999)]

Changed
- Throttle lasso and select-box events for smoother behavior [[2040](https://github.com/plotly/plotly.js/pull/2040)]
- Harmonize gl3d and gl2d zoom speed with cartesian behavior [[2041](https://github.com/plotly/plotly.js/pull/2041)]

Fixed
- Fix numerous `restyle` and `relayout` bugs [[1999](https://github.com/plotly/plotly.js/pull/1999)]
- Fix handling of extreme off-plot data points in scatter lines [[2060](https://github.com/plotly/plotly.js/pull/2060)]
- Fix `hoverinfo` array support for `scattergeo`, `choropleth`,
`scatterternary` and `scattermapbox` traces [[2055](https://github.com/plotly/plotly.js/pull/2055)]
- Fix `Plotly.plot` MathJax promise chain resolution [[1991](https://github.com/plotly/plotly.js/pull/1991)]
- Fix legend double-click trace isolation behavior for graphs with
`visible: false` traces [[2019](https://github.com/plotly/plotly.js/pull/2019)]
- Fix legend visibility toggling for traces with `groupby` transforms [[2019](https://github.com/plotly/plotly.js/pull/2019)]
- Fix single-bin histogram edge case [[2028](https://github.com/plotly/plotly.js/pull/2028)]
- Fix autorange for bar with base zero [[2050](https://github.com/plotly/plotly.js/pull/2050)]
- Fix annotations arrow rendering when graph div is off the DOM [[2046](https://github.com/plotly/plotly.js/pull/2046)]
- Fix hover for graphs with `scattergeo` markers outside 'usa' scope [[2030](https://github.com/plotly/plotly.js/pull/2030)]
- Fix handling of cross anti-meridian geo `lonaxis` ranges [[2030](https://github.com/plotly/plotly.js/pull/2030)]
- Fix miter limit for lines on geo subplots [[2030](https://github.com/plotly/plotly.js/pull/2030)]
- Fix `marker.opacity` handling for `scattergeo` bubbles [[2030](https://github.com/plotly/plotly.js/pull/2030)]
- Fix layout animation of secondary axes [[1999](https://github.com/plotly/plotly.js/pull/1999)]
- Fix `sankey` hover text placement for empty `link.label` items [[2016](https://github.com/plotly/plotly.js/pull/2016)]
- Fix `sankey` rendering of nodes with very small values [[2017](https://github.com/plotly/plotly.js/pull/2017), [#2021](https://github.com/plotly/plotly.js/pull/2021)]
- Fix `sankey` hover label positioning on pages that style the
'svg-container' div node [[2027](https://github.com/plotly/plotly.js/pull/2027)]
- Fix aggregation transforms restyle calls [[2031](https://github.com/plotly/plotly.js/pull/2031)]

Fixed
- Fix shapes on overlaid axes [[1975](https://github.com/plotly/plotly.js/pull/1975)]
- Correctly clear cartesian axis titles on full axis updates [[1981](https://github.com/plotly/plotly.js/pull/1981)]
- Make cartesian hover spikes work when no tick labels are present [[1980](https://github.com/plotly/plotly.js/pull/1980)]

Added
- Add aggregate transform [[1924](https://github.com/plotly/plotly.js/pull/1924)]
- Add `constraintext` attribute for bar traces [[1931](https://github.com/plotly/plotly.js/pull/1931)]
- Add axis `layer` attribute to ternary axes [[1952](https://github.com/plotly/plotly.js/pull/1952)]
- Add cross-trace matching auto-binning logic to histogram traces [[1944](https://github.com/plotly/plotly.js/pull/1944)]
- Add `data/layout/config` api to `Plotly.toImage` to generate a static
graph without having to render an interactive graph first [[1939](https://github.com/plotly/plotly.js/pull/1939)]
- Add `nameformat` attribute to `groupby` transforms to set pattern by which
grouped traces are named [[1919](https://github.com/plotly/plotly.js/pull/1919)]

Fixed
- Fix hover label exponents [[1932](https://github.com/plotly/plotly.js/pull/1932), [#1949](https://github.com/plotly/plotly.js/pull/1949)]
- Fix scatter fill with isolated endpoints [[1933](https://github.com/plotly/plotly.js/pull/1933)]
- Fix parcoords axis tick scale when `ticktext` is unordered [[1945](https://github.com/plotly/plotly.js/pull/1945)]
- Fix sankey with 4 multi-links or more [[1934](https://github.com/plotly/plotly.js/pull/1934)]
- Fix exponent labels beyond SI prefixes [[1930](https://github.com/plotly/plotly.js/pull/1930)]
- Fix image generation for marker gradient legend items [[1928](https://github.com/plotly/plotly.js/pull/1928)]
- Fix parcoords image generation when multiple parcoords graphs
are present on page [[1947](https://github.com/plotly/plotly.js/pull/1947)]
- Ignore bare closing tags in pseudo-html string inputs [[1926](https://github.com/plotly/plotly.js/pull/1926)]

Fixed
- Fix `groupby` / `filter` interactions when filter includes `target` data
[[1892](https://github.com/plotly/plotly.js/pull/1892)]

Fixed
- Add fallback for `ArrayBuffer.isView` fixing gl2d and gl3d rendering
in environments that don't support it (e.g. RStudio) [[1915](https://github.com/plotly/plotly.js/pull/1915)]

Fixed
- Fix axis line rendering when `showticklabels` is false
(bug introduced in 1.29.0) [[1910](https://github.com/plotly/plotly.js/pull/1910)]
- Fix histogram auto bin restyle [[1901](https://github.com/plotly/plotly.js/pull/1901)]
- Fix colorbar edge case that caused infinite loops [[1906](https://github.com/plotly/plotly.js/pull/1906)]