Add direct handling of quadratic beziers to save compute time and number
of points. Update cubic interpolation to reduce number of points
generated for a given smoothness
Cache data on open and used cached data to avoid multiple re-calcs
Remove minimum line length and number of segments and replace with
standard max error level. Allows us to specify the tolerance of bezier
interpolation
- add support for color
- support non-uniform scale
- add GetImageBBox()
- fix SVG GetImageWidth/Height not being in mm
- fix import offset not being in mm
- add graphics importer for LIB_SYMBOL