FIX: GPU computing examples were missing the ping-pong mode that allow to read and write to the same texture (using different channels)
Flakification
simplified shaders
switched grayscott back to Unstable species because zebrafish seems to stall after ~10 seconds.
Merge pull request #1 from lcampagn/examples-fix

simplified shaders
FIX: Removed local transforms.py
Added transforms and cube in util/__init__.py
FIX: remove unnecessary glDrawBuffer calls
Merge pull request #186 from rougier/examples-fix

FIX: GPU computing examples were missing the ping-pong mode