using std::shared_ptr instead of boost::shared_ptr
implemented Seek() for ZipFileArchive, and improved end of stream detection
made Color ctor argument const
implemented IAudioManager::SetVolume() for background music
using std::shared_ptr instead of boost::shared_ptr in Audio project
using std::shared_ptr instead of boost::shared_ptr in Common project
removed warning C4996 by replacing std::copy with memcpy
added project RenderEngine
removed includes and libs for freetype2 library from RenderEngine project
added project UserInterface
fixed function GetAngleUp()