Engine: reenabled PNG support (both for textures and screenshots)
Game: added devkit/colorprofiles (profiles for working with textures)
Game: minor fix of client.dat (raised gloss in dungeon environment)
Engine: added support for sRGB textures for PNG and JPEG (by embedding sRGB_IEC61966-2.1 profile). sRGB textures is more friendly to current monitors and have greated precision for dark areas. Since sRGB is a floating point format, it is better to keep original sourcefiles at 16-bit per channel quality. Also note that textures search order is .tga->.png->.jpeg. sRGB gives good resutls for menu graphics and a new textures creation.
Game: preliminary ETC2 texture compression support (fast profile), to be used with newest OpenGL 4.3 hardware and OpenGL ES 3 devices