Slightly changed the window_new() function to not automatically clear the screen. This means that a window_clear() function must be done immediately afterwards to generate the same ReGIS code.

Changed serial output to use Serial.write() which is a bit faster than Serial.print(). Not that it really matters.

Added some 3D examples from Adam Williams.
Converted to use this library, but the more complicated GEAR and GLXGEARS demos don't work on UNO.