* Use the same code style everywhere (mostly about spaces after function names)
* Make sure program & shaders are deleted properly if program creation fails
* Remove gfx::vertex, setup mesh using attributes directly
* Design affine transforms in geom & use them instead of matrices when appropriate
* Create an 'app' module that simplifies application creation
* Implement pixmap font rendering
* Create a simple generic primive painter
* Design resources system
* Design logging system
* Design ui system