Clean Geometry History

When you open a project with a large number of nodes, a notification will appearing indicating that the geometry history can be cleaned. Currently, automatic notification happens with at least 100 entities or at least 4 operations in sequence. History removal can also be run from Geometry > Clean Geometry History. Below is an example of a significant improvement, where clean history reduces the time it takes to open the project and the RAM usage.

	RAM use (MB)	Time to open project (seconds)
Before cleaning history	21,498	102.8
After cleaning history	4,315	18.5