Keep match history and user status different for each guild

[lekro]

We have a few options to accomplish this.

• Add another column to each dataframe for guild
• Change match_history and user_status to two Python dicts from int -> pandas.DataFrame.
  • This might be the easiest option of all. We will simply have to ensure that the dataframes exist for the desired guild, and then we can reference them with self.players[guild] or self.events[guild].
  • This will also mean that we will have to think of a proper naming scheme for the pickle files. I am thinking they should be GUILD-players.pickle and GUILD-events.pickle and they should go in some dir which is configurable in the global configuration.

[lekro]

On second thought, the players and events dataframes can be simply loaded from listing the contents of the data directory. This can be all done at init time. But if a particular guild doesn't have a set of dataframes, that has to be done at runtime.

We can have a dict of guild -> tuples instead, where tuple is (lock, events, users)? But tuples are immutable so we'd have to make a new tuple when saving things.