Fix pixel value rendering for non-fixed-size QT windows
Fix image saving from QT toolbar
Updated iOS camera. Added rotation flag. Added functions to lock/unlock focus, white balance and exposure.
Added regression tests for SURF/SIFT (related to #2892)
refactored box filter
refactored Linear Filter
refactored Laplacian filter
refactored Separable Linear Filters
refactored Morphology Filters
refactored Image Rank Filters
refactored 1D Sum Filters
refactored StereoBM
refactored StereoBeliefPropagation
refactored StereoConstantSpaceBP
refactored DisparityBilateralFilter
switched to Input/Output Array in  reprojectImageTo3D & drawColorDisp
fix for #3077
removing "-fvisibility=hidden" gcc option due to lack of `__attribute__ ((visibility("default")))` in jni_md.h/JNIEXPORT
updated documentation
fixed Kirill's comments
updated licenses