- BKE_blender_version.h (only version defines & versionstr). - BKE_blender_copybuffer.h (currently only used for view3d copy/paste). - BKE_blender_undo.h (global undo functions). - BKE_blendfile.h (high level blend file read/write API).
creator.c was getting hard to follow. - Split off argument and signal handling into own files. - Move docstrings next to functions (to keep docs grouped with code).