Fixed a crash introduced in pull request #1449.
Fix assertion in GPUImageView when using Autolayout
Merge pull request #1463 from tcamin/master

Fix assertion in GPUImageView when using Autolayout
Added kColorConversion601FullRange  conversion table for Still Images
Fixed a bug with filter groups and still image processing.
Merge pull request #1470 from stelabouras/master

Added kColorConversion601FullRange  conversion table for Still Images
Proper YCbCr to RGB conversion
Merge pull request #1473 from Petrakeas/master

Proper YCbCr to RGB conversion