Drawfire (0.1.1)

Additions:

• added toRect conversion from Image object
• added several new keys to be recognised
• added several new colours
• added utility proc to check screen size

Improvements:

• drawRect does not require var type of Rect object, so can be iterated
  more easily
• setPixelRelative now serves as relative setPixel alternative

Fixes:

• fixed wrong Nimble dependencies that assumed NGLFW/gl*FB are in Nimble list