Update to v0.1.5

Quick little update to the pre-alpha! Some fixes that are pretty important for those they affect.

Changelog:

v0.1.5

• Fixed issue with game playing at higher speeds on higher refresh rate monitors
  • This has made the frame loss issue more rare, but not fully fixed
• Fixed crash in options menu when players had a controller plugged in
• Fixed some objects that would blink when clicked on (even though they had no function)
• Added extra info to "Equip your guns" tip screen
• Added extra hint to first Tough Mutadog fight
  • Increased Tough Mutadog health
• Added failsafe to make sure Radioactive Zombie stays dead 
• Added "PH" note to a few pieces of placeholder art that needed it
• Removed a stray RTP music stinger