Combat Update

Few new changes:

-Removed the ability to "Concentrate" in combat. Concentration would increase chance to hit and damage, but would be lost if the character concentrating was hit. This slowed down combat however, and it didn't make sense for fish to be concentrating.
-Added Diving Suit. Wearing the Diving Suit will give the player an additional ten minutes of air, as well as a boost to defense. However, while in the Suit, the only weapon available to the player are its arms, which may be significantly worse than the player's other weapons. Items can still be interacted with as normal.
-Flooding system change. There was a workaround present that allowed a player to survive with no air indefinitely, by constantly moving between rooms. This has been removed.
-A few random announcements have been added.