FIXME: wrong method signature, python-to-javascript kind of problem
whitespace
better format for the root node
use a generic keywords argument, to unify how identifers are used in pointPen commands
adopt point pen usage to new identifier passing style in kwargs, fix point to number conversion
point coordinates are now always numbers
add tests for GLIFPointPen
make GLIFPointPen pass all tests
browser domimplementation.createDocument needs some default arguments
add tests for GLIFPointPen
comment about a corner case behavior of the browser chrome