Update CONTRIBUTING.md
-Pull in some changes from #75
Try to fix broken Battalion's Backup logic
-Try to fix FF2FLAG_ISBUFFED
-Try to fix OnChangeClass
-Allow players to switch teams while dead
-Fix players being able to switch teams during the first round
-Fix players not being able to choose spectator
-Fix players getting notified multiple times about the next boss
Add another option to cvarBossTeleportation
-Totally disallows any boss from using teleporters