Playtest v1.3 - Bugfixes, Visual, Sound and Boss improvements

Well, there were a lot of other small bugs that I had to fix - also a few big ones. The main idea of this update was to improve some visual and sound effects for better player clarity and overall visual style. Anyhow - what's been changed:

• Bugfixes (a  lot of small bugs, some crashes)
• New VFX and SFX for some objects
• Improved the VFX  of 2 Boss fights for better clarity and player feedback
• Settings are now saved in a "save_data" folder in the executable directory
• Adjusted the BGM for one of the boss fights
• Added a warning for photosensitivity