Update to 1.21.6

THIS IS A ONE-TIME BACKPORT AND IT WILL NOT GET UPDATED

• Added the Background Opacity Option for the Style Meter
• Fixed the Style Meter Sound playing even when the Style Meter was not visible
• Fixed the Style Meter not using Ultrakill Logic
• Removed Style Meter Background Texture

• Added the Style Meter

Gain style through various different actions such as combos, mace hits and much more!

• Added more config options to the parry effect

• Update to 1.21.5
• Tweaked default config values

• Changed the config to allow tweaking of more values
• Internal Changes on how Screen Effects are handled

Initial Release