This week we add area boss for town theme. The bullet patterns of this boss are more complex than previous ones. In addition, we make this boss interact with player by constantly moving. Hope it can improve game play. wwwww



Feature
- add town boss stage
Bugfix
- prevent cursor delayed render on black screen border
- prevent return ui text wrapping after changing screen size
- fix time step for shot related systems
- make delay laser twinkle for visibility
