- TTT MP: configurable skull names
- TTT SP: improve the AI (blocking an effective winning strategy)
- TTT: fix messages on won (other too slow)
- TTT: fix wrong player getting payed (other too slow)
- RPS: make titles of player heads configurable in the language file
- fix option 'timePerTurn' and introduce 'waitPerTurn' in the config
- make countdowns not show '0 seconds left' (rock paper scissors)
- fix some messages (placeholder %loser% was not being replaced)
- compatibility with minecraft 1.13
- correct display names of heads in tic tac toe and rock paper scissors
- remove debug messages