Adds cube to be satelite around globe
Satellite orbits globe
Converted to better pwgl structure
Moved to textures to better pwgl structure
Changed function names for consistency
Shaders also moved to better obj structure
Also named buffer functions for clarity
Re-enabled zoom boundaries
Fixes infinite rotation bug, plus other misc bug fixes and tweaks
Fixes bug where background not black
Replace earth texture with given file
Fixes infinite spin bug
Moved to different style of rotating scene
Slowed rotation of satellite
Adds keyboard control over satellite orbit
Merge branch 'cube'