Update GPUImageHistogramFilter.h
Added support for fast texture upload
Added new histogram equalization filter
Added new histogram equalization filter
Added new histogram equalization filter
Added example of new histogram equalization filter
Added example of new histogram equalization filter
Added example of new histogram equalization filter
Update GPUImageHistogramEqualizationFilter.m
Update project.pbxproj
Update project.pbxproj
Merge pull request #1736 from amarcu5/master

New histogram equalization filter
callback for video loading to properly setup video for render
separate Picture initialization from processing so the image can be later updated
disable framebuffer reference counting if the check for it is disabled to prevent overrelease
ability to toggle video writing synchronization
colorAtLocation in the rawData class doesnt need to flip height
add video load callback for init with player item