- renamed some functions for file drag/drop to be more similar to existing
- improved log messages for the library loader
- removed hack that blocked .exe and .lnk files (annoying for developers)
- removed hack that always clears dragging filename (not very robust)
- reordered includes to prevent accidental dependencies.
- moved arch specific files into their own folder (easier to include with cmake).
- renamed non-class files to reflect new code style (lower case with underscores).
- using full relative paths for includes (easier for understanding dependencies).
- using #pragma once instead of classic-style header guards.