Minor update, preview of new characters

1. Updated physic and damage so it is slightly more difficult to get a knock out but easier to flash your opponent. This should make fights a bit more strategic. One punch knockouts are certainly still possible but less frequent.

2. Preview of 2 new characters. While they are not available to fight, you may see both new characters in the bot battle option. I am considering a steam release of Slump Em and these characters would make a full appearance in that version whether it ends up being free or paid.