OpenGL Menu/Game System - 1.1

Some boilerplate code to demonstrate how a menu can be incorporated with a 3d game system. For tutorials, see my youtube channel. Source can be found in the repo under pyopengl/13 menu system

A simple menu system made in Pygame with PyOpenGL, in this release, particles have been added. This code is explained in episode 16 of my tutorial series: https://www.youtube.com/playlist?list=PLn3eTxaOtL2PDnEVNwOgZFm5xYPr4dUoR