Build features
-Updated Zombie Behavior
-fixed wall gun buy glitch where the first interaction button press was broken
-New Map , greybox currently will be called TradeCenter. This map will function as the new starting map aka tutorial
-fixed bug with car select menu not loading characters after pressing the load saved character button in game
-New Feature * players will have 3 lives and only lose their accumulated points when they run out of lives, causing the lives count to revert to 3 and Points set back to 0
-Quest System is WIP characters are now able to level up to the rank of Sergeant