Implement git for version tracking of deck (and collection) changes

Git is the best version-tracking software ever created. I’m sure you use it for change tracking of moxfield’s codebase.

I’m suggesting to use git for tracking changes to decks (and maybe also collection).

That way we can have not only multiple different versions of each deck (similar to archidekt’s “snapshot” feature), but also, different branches of each deck so we can experiment without having to make tons of copies of a deck, then have the ability to compare (diff) and merge decks, cherry pick changes, create patches, stashes, etc.

At the very least, please implement snapshots like archidekt has. Really need this.