November update - game api

[klappvisor]

• You can now update high scores to a lower value by using the new force parameter in setGameScore. Handy for punishing cheaters or fixing errors in your game's High Score table.
• Starting today, messages with high scores will be updated with new high scores by default. Use disable_edit_message in setGameScore if you don't want this.
• The edit_message parameter from setGameScore is no longer in use. For backward compatibility, it will be taken into account for a while, unless disable_edit_message is passed explicitly.