MATH: Added value iterators for math::Vector
APPS: Fixed a makescene bug with missing images in NVM files
APPS: Changed mveshell behavior when exporting float images
MVE: New bundle class and I/O functions
TESTS: Removed cleaning of gtest files from Makefiles
MATH: Updated file summary and author information
MVE: Updated file summary and author information
UMVE: allow plugins to use SceneManager
UMVE: add hello world plugin example
MVE: also load shaders from string (API change!)
UMVE: use new shader api
UMVE: have a search path for plugins/shaders

Search for shaders and plugins in several paths, using Qt Resources as a
fallback (this is especially useful for shaders).