Rejiggle probabilities.
Map stuff.
New power: Scramble Powers. Change a pawn's powers into the same number of randomly chosen ones
Allow spectators to see invisible pawns.
Spectators don't count as players.
Don't start the game unless there are at least two teams.
Rework power directions. The target direction is picked at use time now.

Directions are represented as a bitfield, and the server computes target
tiles for the powers now.