[sdl2 wrapper] Ability to getting window coordinate.
               New setFullscreenSetting to be able to use SDL_WINDOW_FULLSCREEN_DESKTOP, deprecated the setFullscreen function.
Fix new SDL2Renderer.copy() function being incorrect.
[sdl_ttf] Wrapper for TTF_RenderGlyph_Blended.
Less annoying SDL_SetTextureAlphaMod and SDL_SetTextureColorMod wrappers.