Rimsschemedrawer

This is the new RIMSSchemeDrawer `v3.0.0` release. The main user features that are new are the following:

- Figures can be plotted in light and dark mode with transparent or solid backgrounds (useful for presentations).
- The ionization potential is automatically filled and not anymore user supplied. For details on ionization potential, see the [RIS database website](https://rims-code.github.io).
- Proper documentation of the program is available [here](https://rimsschemedrawer.readthedocs.io/en/latest/).
- Config files loading and saving are compatible with submitting schemes for the [RIS database website](https://rims-code.github.io).
- Lasers that were used can now be selected (mainly important for database submission).
- The program is not only available as a pre-packaged installer, but can also be installed directly from `pypi` (see [docs](https://rimsschemedrawer.readthedocs.io/en/latest/install.html)).

As always, if you find any issues, please report them and have fun with the new version.

This is the first release candidate for the new version of the RIMSSchemeDrawer.
It should be fully compatible with the previous version's config files, however, discrepancies might occur since the ionization potential is now coded into the drawer itself and cannot be user selected anymore. Be aware of changes.

Currently, executables for Linux, Windows, and MacOS are published, however, these are not installers yet. The full release will include installers that place the program nicely for you.

Running instructions:

On Linux, make the file executable, then run it from terminal (or by double-clicking it).

On Windows, double click the downloaded file and trust it.

On MacOS, make the file executable, then run it from terminal (or by double-clicking it).

The current release of the RIMS Scheme Drawer contains the following updates:

- Horizontal lines are now forced to be black. Depending on `matplotlib` version, they were `"C0"` colored before.
- Update copyright

*Note*: This release contains no major changes compared to the last one with respect to the user interaction.

The current release of the RIMS Scheme Drawer contains the following updates:

- Compilation and release now takes place on github using github actions.
- Windows, OSX, and Ubuntu versions are released.
- Version date is no longer displayed.

*Note*: This release contains no major changes compared to the last one with respect to the user interaction.

First public release of RIMS Scheme Drawer. Windows and OSX installers are provided.

For bug fixes and feature requests please use the issues function of the github repository.

SHA256 sums:
31e788c1be739f97bdf080712b207443ca6c48c7b9861a4cf5a35deb83c820e5 RIMSSchemeDrawer_v2.1.2.dmg
aa4b11e4b0b1b918bcc22ac243b2663703787ab3bd3ddacc4d71d5bb83d47d0e RIMSSchemeDrawerSetup_v2.1.2.exe