Fix a bunch of small Arena issues
Soulspheres (and Megaspheres due to this) will now clear your status effects
Small Shield-related tweaks
Use integer math here
Don't let you use Detox Stims if you don't have any toxicity
Merge branch 'master' of https://github.com/Kyle873/DoomRPG
Merge branch 'master' of https://github.com/Kyle873/DoomRPG