Report-creator

- <todo>

- Make pan and zoom support for `rc.Diagram()` optional (defaults True)
- Add `rc.Radar()` component that sources data from a Pandas `DataFrame`
- Docs improvements (numerous)
- `tabulate` (MIT License) added as dependency
- Doubled the number of tests, increased tewst coverage to 72%

- Optional put code blocks in vertical scrollable windows to limit the report length.
- Add pan/zoom for `rc.Diagram()`
- Markdown now allows mermaid fenced code blocks (like Github does)

- Style code blocks better (remove injected comment)
- fix quirky behavior when it comes to width and layout issue for contents within a `rc.Collapse()`

- Added missing dependency package (`python-dateutil`)

- Block \<script\> tags in Markdown when converting to HTML (while preserving other HTML)
- Added emoji support to `rc.Markdown()` for full GitHub-flavored-markdown compatibility :red_heart:
- Fixed [c.Diagram() do not get re-sized when they are initially hidden](https://github.com/darenr/report_creator/issues/13)
- Code default theme changed to highlight.js `xcode` colors
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