Added new experimental section that allows you to cut objects based on current clipping planes in the scene. The difference from other clipping plane methods - it actually (temporarily) edits meshes geometry and adds cappings at the cut. So, the clipped meshes can be seen both on render and cutted parts won't get in the way as they do with temporary section cutaways (shader based method)
Example - https://imgur.com/a/SOqovOM
bim.reassign_class wasn't considering that root.reassign_class will also reassign class for occurrences of the same type and was reaccessing invalid elements
* initial ui
* changed the group name
* groups counter in ui
* added operators for selection and breaking link in the ui
* small removal
* changed IFC operators to _execute
* added simples linked aggregate test
* small fix in remove_old_connections function
* added test for refresh linked aggregate
* refresh linked aggregates now preserves the objects original name
* small fix in recreate_connections function
* tests for Refresh Linked Aggregate
* test for Refresh Linked Aggregate after copying an object
* small deletion
* added custom incremental naming
* small fix in tests
* small fix on the number for renaming
as probably in the most cases user would want 1 style per 1 representation item
After this it's finally possible in BBIM to assign styles to representation items through the materials: https://imgur.com/a/cgiJ1KV