Rofimoji

Changed
- The extractors have been rewritten: There are now many, *many* supported symbols (all that Unicode offers), but some may have been renamed.

Added
- A new file for all kinds of maths symbols.

Changed
- The new emojis from v13.0 are here!
- `rofimoji` is now modular and has an actual `setup.py`, as the emojis are no longer part of the picker code.
- The arguments to insert using the clipboard have been renamed: `--insert-with-clipboard` and `-p`

Added
- You can ask `rofimoji` to only ever copy the emojis to the clipboard with `--copy-only` (`-c`).
- There are now data files for all of Unicode's scripts.
- A configuration can also be stored in `$XDG_CONFIG_HOME/rofimoji.rc`.

Fixed
- A race condition with Firefox is now resolved (23).

Added
- You can choose a new input method: `rofimoji` can copy your emojis, paste them into the application and restore the previous contents.
- There are now more keywords included so you can find the appropriate emoji more easily.
- You can select a skin tone by default using cli args.
- You can pass arguments to rofi using `--rofi-args`.
- And you can use alternative emoji lists when you provide the `--emoji-file` parameter.

Changed
- This release is based on the emoji v12, including all these: https://unicode.org/emoji/charts/emoji-versions.html#2019 .
- Renamed meta files to upper case for better visibility.
- Updated dev dependencies to new versions.

Fixed
- Fix bug when trying to copy multiple emojis. (6)