Canasta

After a long delay, finally the latest version of MiniCards has been released. This introduces Canasta, the famous card game for four players. Many changes have been made under the hood; these will be pushed out to sandbox mode in future updates, and there will be other smaller improvements to the game to follow, notably achievements for it are not implemented yet. Part of the reason for the delay is because I have been travelling and so have not had as much time to devote to MiniCards, however now the core functionality is in, the updates can be smaller and I should be able to release more frequently.