- first pass of the simplified api is done: all basic shapes are there
 * also modified the handling of 2d shapes in a parent/children hierarchy: now cag (2d) shapes are converted to 3d AT THE END of the code
and not right after being added to another object as a child
 * basic post processing (see above) of mixed 2d/3d hierarchies is done (see csg processor module) need to solve relative to parent positioning issues
 * added same sort of parent/children hierarchy to cag objects as csg objects

- added first pass of svg detailing the coffeescad app structure and inner workings