Krita VFX v0.2.1

Sorry for the bit of a hiccup in release, this fixes an issue where I left some test code in that would potentially break when opening the setting window. I'll copy and paste other changes from the last release below:

It's been a bit, but I've finally gotten around to working on some long overdue features. This release includes the following changes and improvements:

• Added support for more color models and color depths
  • This release supports all color models in Krita currently (RGB/Alpha, CMYK/Alpha, XYZ/Alpha, Lab*/Alpha, Grayscale/Alpha, and even YCbCr/Alpha)
    • Please note that some of the effects may not have the intended effect on color spaces other than RGBA
  • This release also supports 8-bit int, 16-bit int, and 32-bit float color depths
    • Also note that 32-bit float color depth may not work as intended
• Added new Help button to each window with a detailed description of what parameters do what
• Added new effect - Render Lens Dirt
  • This effect renders many shapes to a new layer
  • The size, opacity, direction, and variance of the shapes can be adjusted
• Added new Settings window for universal settings, like the CPU Worker Thread Count
• Improved performance, thanks to using compiler flags and being smarter about the default CPU usage

Thank You all for continuing to watch this project, and opening issues with any trouble you face. This project is a wonderful waste of free time for me and I really appreciate knowing that people use this! That said, please continue to suggest changes or point out any issues you find, I'm sure there's many with the new color spaces support added.