- correct all icon usage. use 'CANCEL' instead of 'ERROR' to indicate error correctly. and move these icon const into UTILS_icons_manager.py
- auto rename generated rail section to match the default name standard.
- give more clear signal about import and export bm file by using Operator.report() function.
- remove ignore hidden property. because it is rarely used.
- support more select mode. like blender selection.
- merge function filter by group and select by group as a united function.
- update enum prop into radio button display mode in bmx export and group name selections
- move rename system into outline window right click menu.
- add grouping operator to object menu in outline window.
