A complete gutting of the internals of ytdl-sub to support functions in our variable syntax, in addition to being able to access a yt-dlp entry's .info.json fields using functions. Functionally, ytdl-sub should still look and behave the same from a user-perspective.
With so many lines of code changed (+8927, -2708), no doubt there will be new issues. Please make a GH issue or reach out on Discord if your config/subscriptions break in any way/shape/form.
Details on how to use function support will come soon in the form of proper documentation in our readthedocs.
Fixes yet another bug that is match-filter related. The `date_range.before` value would get ignored if you specified any other match-filters. That is fixed by making them `&` behind-the-scenes.
Closes Issue: https://github.com/jmbannon/ytdl-sub/issues/729
Add a new field to the match_filter plugin: `download_match_filters`. This set of filters will be applied at the download stage (as opposed to `filters` which get applied at the metadata stage). By default, always set `"!is_live & !is_upcoming & !post_live"` as a download filter. This prevents ytdl-sub from hanging when trying to grab live and upcoming videos.
Docs on match-filters: https://ytdl-sub.readthedocs.io/en/latest/config.html#match-filters
