Explicit primitive and id pick results
Finished picking update
Start of Context.endFrame
More Context.endFrame
Start of sampler uniform optimization
Finish sampler uniform optimization
Updated CHANGES.md
Fixed array/uniform mismatch
Optimize calls to uniform1f from the central body shader
Reduce string creation for shader keys.  Drops 0.10% from the profiler
Only merge uniform maps when needed
Updated CHANGES.md
Fixed JSHint
Option to run tests with WebGL validation
Merge pull request #1137 from AnalyticalGraphicsInc/pick

Picking updates
Merge remote-tracking branch 'origin/master' into actualtestperformance
Fixed JSHint warning
Merge remote-tracking branch 'origin/master' into performance
Merge pull request #1146 from AnalyticalGraphicsInc/actualtestperformance

Test performance improvements
Fixed typo