Update 17: New Saw Launcher Weapon, Charged Rounds Upgrade, and Map 2 Soundtrack

New Content:
- New Weapon: Saw Launcher!
- New Upgrade Tree: Charged Rounds!
- 3 new achievements: HANDCANNON UNLOCKED, SAW LAUNCHER UNLOCKED, SAW LAUNCHER EXPERT
- Added a Delete Button which lets you permanently delete any upgrade from your run once every level up

Changes to Existing Content:
- Buffed Lever-Action Rifle: Damage 10 -> 13
- Buffed Projectile Deflection: Fire Rate -35% -> -20%
- Reduced Guided Missile cooldowns
- Added a slight delay between the projectiles fired by Singularity Explosion
- Added a limit to the number of projectiles that Death Row can create to prevent infinite loops of shrapnel
- Added a new song for Map 2 endless mode
- Replaced placeholder icons for Guided Missile with new ones

Optimization/Bug Fixes/Other:
- Fixed issue with Handcannon and Lever-Action Rifle bullets not detecting enemies when moving too fast
- Fixed issue with Glacial Rounds causing enemies to teleport
- Fire Rate can no longer go below -80% to prevent very long shoot cooldowns
- Added a flashing lights warning to the beginning of the game
- All of the music for Map 2 is available on YouTube!