Bad name "Game Players"

[buchwasa]

Presently the API around game players is a bit confusing, game players aren't necessarily people that are going to stick around during the full game, which isn't really clear in the current API.

I came across my issue when I was checking if the player was in the game when they'd log in, but didn't remember that they are temporary, this is where the permanent session comes into play.

Game players should have all the events handled to them, but should not be expected to be permanent.