Jellyfin-mpv-shim

This release introduces a fully functional desktop client for Jellyfin. Videos played in the client will automatically open in MPV.

Changes:
- Don't reset font sizes when closing menu. (31)
- Add ipv6 support. (32)
- Fix resuming videos with external MPV.
- Don't reconnect to removed servers.

**Jellyfin MPV Shim has no navigation UI. You must cast your media from another application such as the web or mobile application.**

To avoid getting security warnings each time you launch the program, right click and select "Properties". Click "Unblock" towards the bottom of the page, and click "OK".

Changes:
- Fix a bug where external MPV was not starting on Windows.
- Log output from MPV.
- Add logging configuration option to log media decisions and URLs.
- Fix URL management to handle subpaths when port is not supplied and http is used.

This update introduces full-screen 10-foot display mirroring, implemented by mijofa! To use it, enable it through the menu or config file. (See the README.)


Changes:
- Introduce display mirroring support. (24)
- Fix crash in timeline manager when JF returns 404. (24)
- Check for if local direct path files exist before playing. (25)
- Automatically add "http://" and ":8096" (for http only) if not specified.

There are a lot of moving parts in this new version, so if you have a problem please report it. Display mirroring has been tested on Linux and Windows.

This release:
- Make external MPV playback more tolerant of startup failures.
- Add logging for external MPV troubleshooting.
- Fix `pre_media_cmd`, which was not working.

Previous (non-windows point releases):
- Fix an issue where older MPV versions do not work with external MPV.
- Isolate pystray into separate process to avoid Segmentation Fault on Linux.
- Set external MPV as the default player backend on OSX.
- Enable "forkserver" fix for OSX crashes.

This release fixes a regression where enabling external player support results in a crash at startup.