A lot of changes since the last update, namely in response to all that's changed with Invidious.
For posterity's sake, I've kept most of the domains, but at the time of this update most of them are dead. Perhaps I'll remove them in a future update, but for now there are only four or five instances running and they're all included. Some of them have additional backends built into the instance, and the way these backends are linked to demanded a bugfix to the script. Otherwise, it's business as usual.
In the future I may add the feature to directly redirect from YouTube, but that could be tricky.
