~Rewrite ship acceleration logic to be car like, so even heavy ships can move fast.
~AI ships are faster now
~Experience drop increased
+Map is doubled in size
+Weapons can be combined to be stronger
+New UI for multiplayer
+Tutorial tips for boss
~Fixed max kill number in arena
~Fixed level up panel and victory panel showing up at the same time
~Weight adding info is hidden when limit reached
~Other fixes