+ Fixed a crash during change object selection, when CutGizmo is On
+ Fixed Undo/Redo (was accidentally broken with 7912613dc8e11db2ddea8018ce16b26a01756a3b)
* Suppress to delete/add a SolidPart/NegativeVolume from/for objects which are marked as "is cut"
* Suppress to delete Instances which are marked as "is cut"
* Allow delete an object which is marked as "is cut", but show warning message about break of the "cut consistency".
And if this deletion was performed, the all related objects will be unmarked.
* m_connectors_cnt is added into CutObjectBase class to correct synchronization of a connectors count between related objects
+ Added CutObjectBase class which contains cut attributes for object
+ ObjectList and ManipulationPanel :
* Disable all ManipulationEditors for solid/negative volumes of cut object
* Disable Scale/Size ManipulationEditors for objects/instances of objects which are CutParts of initial object
+ Scale/Rotation/Move gizmos are disabled for solid/negative volumes of cut object
+ Select whole CutParts of initial object when ScaleGizmo is active
reset timestamp to 1. This led to a bug where e.g. deleting painted facets
through the respective item in object list followed by possible other actions
and undo restored the painted facets from the time when the project was loaded.
I'm not sure if there was any other situation where this problem manifested.
to help with detecting "not changed" event when taking
Undo/Redo snapshot or synchronizing with the back-end.
Converted layer height profile and supports / seam painted areas
to the same timestamp controlled structure.
If an object indicates a valid timestamp, then the timestamp
is relied upon to not serialize the object data if the timestamp
of the same object on the undo/redo stack matches.
