Material Maker v0.3

• Added a small user manual
• Added the following nodes:
  • Combine: combines 3 greyscale inputs into a color output
  • Decompose: decomposes a color input into 3 greyscale outputs
  • Emboss: generate a lighting effect from an input image (light direction can be configured)
  • Export: defines a custom output image file when exporting
  • Noise: just random black and white pixels
• Added new patterns to the Bricks node
• Rewrote the Blur node: now can be applied horizontally, vertically or both
• Updated the Transform node so its transform can be affected per pixel with greyscale inputs (one per transform parameter)
• Added cut/copy/paste operations
• Added "C" shortcut to center the view
• Library items can now be groups of interconnected nodes

Edit: Attached a patch release for windows that mitigates the mouse-being-captured-during-drag'n'drop problem.