Strip invalid PNG profiles from PNGs Bad PNGs caused a few annoying warnings like “libpng warning: iCCP: known incorrect sRGB profile”. Command used: pngcrush -rem gAMA -rem cHRM -rem iCCP -rem sRGB Note that many images have “@2x” in their name, this probably explains why they have been overlooked before.

add_subdirectory(Training)
add_subdirectory(Challenge)
add_subdirectory(Scenario)