Pydetex

- Added environment recognition.
- Added line numbers and text sliders.
- Added ``\def`` parsing.
- Added tab and shift-tab support.
- Fix copy from output text while using the menu.
- Improve support for itemizes.
- Improve GUI settings, update window sizes.
- Improve tests.

- Added ``\&`` replace.
- Added ``sort_cites``, ``compress_cites`` and ``cite_separator`` to ``process_cite`` parser.
- Added ``replit`` support.
- New auto-copy after process.
- Support for Linux OS.
- Solved ``enumerate`` environment.

- Added itemize support.
- Improve equation support + tex to unicode.
- New docs.

- Improved tex symbols to replace (19).

- Fix newline in GUI (18).
- Improve tests.

- First GitHub release.