Dash-table

-Dash.jl Julia component generation

Added
- [820](https://github.com/plotly/dash-table/pull/820) Add support for Dash.jl Julia built components

Fixed
- [817](https://github.com/plotly/dash-table/pull/817) Fix a regression introduced with [#722](https://github.com/plotly/dash-table/pull/722) causing the tooltips to be misaligned with respect to their parent cell
- [818](https://github.com/plotly/dash-table/pull/818) Fix a regression causing copy/paste not to work when selecting a range of cells with Shift + mouse click
- [819](https://github.com/plotly/dash-table/pull/819) Fix pagination `page_current` and `page_count` fields to accommodate larger numbers

Added
- [808](https://github.com/plotly/dash-table/pull/808)Fix a regression introduced with [#787](https://github.com/plotly/dash-table/pull/787) making it impossible to open markdown links in the current tab.
- Adds a new `markdown_options` property that supports:
- `link_target` nested prop with values `_blank`, `_parent`, `_self`, `_top` or an arbitrary string (default: `_blank`)

Fixed
- [806](https://github.com/plotly/dash-table/pull/806) Fix a bug where fixed rows a misaligned after navigating or editing cells [#803](https://github.com/plotly/dash-table/issues/803)
- [809](https://github.com/plotly/dash-table/pull/809) Fix a bug where a scrollbar flickers on table render [#801](https://github.com/plotly/dash-table/issues/801)

Fixed
- [798](https://github.com/plotly/dash-table/pull/798) Fix a bug where headers are not aligned with columns after an update [#797](https://github.com/plotly/dash-table/issues/797)

Added
- [787](https://github.com/plotly/dash-table/pull/787) Add `cell_selectable` property to allow/disallow cell selection

Changed
- [787](https://github.com/plotly/dash-table/pull/787)
- Clicking on a link in a Markdown cell now requires a single click instead of two
- Links in Markdown cells now open a new tab (target="_blank")

Fixed
- [785](https://github.com/plotly/dash-table/pull/785) Fix a bug where the table does not refresh correctly if a property was previously missing
- [793](https://github.com/plotly/dash-table/pull/793)
- Fix a bug where headers are not aligned with columns with fixed_rows [777](https://github.com/plotly/dash-table/issues/777)
- Fix a regression where headers don't scroll horizontally with fixed_rows [780](https://github.com/plotly/dash-table/issues/780)

Added
- [729](https://github.com/plotly/dash-table/pull/729) Improve conditional styling
- `style_data_conditional`: Add support for `row_index` and `column_id` array of values
- `style_header_conditional`: Add support for `header_index` and `column_id` array of values
- `style_filter_conditional`: Add support for `column_id` array of values
- `style_cell_conditional`: Add support for `column_id` array of values
- `style_data_conditional`: Add new conditions `state: 'active'|'selected'` to customize selected and active cell styles

Fixed
- [722](https://github.com/plotly/dash-table/pull/722) Fix a bug where row height is misaligned when using fixed_columns and/or fixed_rows
- [728](https://github.com/plotly/dash-table/pull/728) Fix copy/paste on readonly cells
- [724](https://github.com/plotly/dash-table/pull/724) Fix `active_cell` docstring: clarify optional nature of the `row_id` nested prop
- [732](https://github.com/plotly/dash-table/pull/732) Fix a bug where opening a dropdown scrolled the table down its last row
- [731](https://github.com/plotly/dash-table/pull/731) Fix a bug where `data=None` and `columns=None` caused the table to throw an error
- [766](https://github.com/plotly/dash-table/pull/766) Sanitize table `id` for stylesheet injection (fixes usage with Pattern-Matching callbacks)

Changed
- [758](https://github.com/plotly/dash-table/pull/758) Improve error message for invalid filter queries