Added utils/hotloader utils, that help checking if a file is changed
Minor style changes, tabified poro/desktop/graphics_opengl.cpp and .h files
Minor, added #include platform_defs.h into poro.h
poro_assert - changed poro_assert to use pow2assert on Windows
utils/random.cpp changed the seed of fastrand, it's now a bit more 'random'
utils/vector_utils - now has VectorRemove method and VectorRemoveAll
ceng::GetDateForFile now includes seconds as well
as::Sprite loading and caching now uses ceng::GetDateForFile to check if a texture has changed since it was cached and reloads it again if it was changed