update 1.5-1.8

very big update (I didn’t want to split it because I kept adding stuff)

• audio (SFX and music) and audio controls
• unique bosses per map
• pause/death UI scaling and improved overlay scaling
• new ability icons
• (hopefully) fixed shader bug with overlays (I can’t test it)
• droids die if they fall over
• less random crashing for new bosses