Added code to calculate roll and pitch from accelerometer
Enabled GLM_FORCE_RADIANS
Added proper barrel distortion for Cybermax
Hacked together some blending between accel and gyro data to avoid drift, still glitches out when pitching beyond 90 degree
Removed some obsolete code
Finetuned barrel_power
Started using SceneGraph for doing final composition
Minor cleanup and bug fixes
Added create_rect() for geometry used for composition
Added crosseye and anaglyph to composite shader