PUGL

For now the PUGL section is going to be basically a stub until we are sure it'll be in the next version of setBfree as our OpenGL helper, and know PUGL is going in its current direction. The files described in the Overview are enough to go further in its source code, but it already does pretty much what you'd want it to do already. Regardless, if we continue to use it, we're close to the developers, and if this expands it'll likely be part of PUGL's core documentation