Remove unnecessary bin.
Rearrange player reaction.
Remove assertions.
Remove unused options on bb_bot.

- Fix name attribution.
- Improve message.
Use only one thread to send all acks.
Unify bots interface. Remove Client dependency.
Rename Game to World.

- Remove unused board var.
Use only one thread per client.
Use socket from player.
Merge branch 'refactor/client'