v0.2 / Postjam Update

Changes: 

• New music track for combat segments
• Soldiers can now scream
• Made snipers easier to stagger
• Added VFX (shotgun firing, soldier gun/shield props when ragdolling, non-amogus boss explosions)
• Proper(?) controller support
• Mac support
• Some UI improvements
• Fixed bug where player could fall out of the world (mostly)
• Fixed bug where parry hitbox could become active indefinitely
• Fixed some timing issues that occurred at lower FPS
• Fixed Youmu being unhittable with sword
• A few other bugfixes/performance adjustments/tweaks