Major changes in ColorSpace Definition
Now color space is defined in PlaYUVerFrame
New function to check if a pixel format is RGB or YUV or Gray or ARGB
implemented
Improve PlaYUVerFrame functions
Add histogram files
Histogram does not work, although it has the required functions
Improve source/lib/LibMemory.h
Change the update behavious of properties side bar in the main app
Bugfix in HistogramWidget and PlaYUVerFrameStatistics
Conditions were not proper checking if frame exists
Change on some variables name
Still incomplete the code and some variable must be renamed
to include code style
Add PlaYUVerFrame::getChromaLength()
Get number of pixeis in each chroma
Improve Properties side bar
Significantly improve the histogram to support both YUV and RGB
Still needs to confirmation and code arrangements
Merge branch 'master' into dev_properties_side_bar
Merge branch 'master' into dev_properties_side_bar
Clean an warning in PropertiesSidebar
merge master in dev_properties_side_bar
Merge branch 'master' into dev_properties_side_bar

Conflicts:
	source/app/plaYUVerApp.cpp
Add support to parse just a specific region of the image
Currently incomplete due to the lack of copy region in PlaYUVer frame
Merge branch 'master' of https://github.com/pixlra/playuver