Dash-table

Changed
- [713](https://github.com/plotly/dash-table/pull/713) Update from React 16.8.6 to 16.13.0

Added
- [711](https://github.com/plotly/dash-table/pull/711) Added R examples to package help

Changed
- [704](https://github.com/plotly/dash-table/pull/704) Renamed async modules with hyphen `-` instead of tilde `~`

Added
- [606](https://github.com/plotly/dash-table/pull/606) Add markdown support for table cells. Cells will be rendered as markdown if the column `presentation` is specified as `markdown`.
- Add highlight.js for syntax highlighting. If `window.hljs` is specified, that will be used for highlighting instead.

Fixed
- [670](https://github.com/plotly/dash-table/pull/670) Fix a bug where `derived_filter_query_structure` was not getting updated properly
- [677](https://github.com/plotly/dash-table/pull/677) Fix a bug where the table fails to load when used inside an iframe with a sandbox attribute that only has allow-scripts
- [665](https://github.com/plotly/dash-table/pull/665) Fix a bug in Firefox where the dropdown cells height is incorrect

Fixed
- [637](https://github.com/plotly/dash-table/pull/637) Fix multiple issues
- Fix IE11 compatibility issues and add ES5 compatibility and validation
- Fix a bug with `loading_state` being handled incorrectly, causing the table to steal focus

Changed
- [554](https://github.com/plotly/dash-table/pull/554) Async loading of `xlsx` library on export

Fixed
- [618](https://github.com/plotly/dash-table/issues/618) Fix a bug with keyboard navigation not working correctly in certain circumstances when the table contains `readonly` columns.
- [206](https://github.com/plotly/dash-table/issues/206) Fix a bug with copy/paste to and from column filters not working.
- [561](https://github.com/plotly/dash-table/issues/561) Fix an incorrect React PureComponent usage causing warnings in DevTools.
- [611](https://github.com/plotly/dash-table/issues/611) Fix a bug with copy/paste causing hidden columns to be removed from the table