- finish adding #pragma once to headers
- move configuration initialization into Game class
- print debug to stdout by default
- explicitly pass file to refresh to config auto refresh
- add delegate to sb namespace and deprecate get_delegate() in favor of delegate()
- set custom log function before loading config
- raise exception when no model textures are available
pixel value modifications to textures of any SDL_TEXTUREACCESS_* and
any pixel format
- Color inherits SDL_Color directly instead of emulating it
- added cast operator for converting Box to SDL_Rect