Can be enabled/disabled through preferences => Connected to 'SaveWBbyTab' parameter
Workbench is saved when it is changed or when a new subwindow is created
It is restored when subwindow is activated if one was previously saved
1 - Reports the error to the user in a popup.
2 - Names of the backups include the timstamp instead of a number. Names have more sense and the files can be sorted by names what is also the age order.
3 - Behaviors when changing configuration improved, the number of files present on the system was not reduced when reducing the number of backups or backups deactivated.
PropertyLinkItem now support all major types of link property.
PropertyLinkListItem is no longer necessary, but kept for backward
compatible, which is now identical to PropertyLinkItem.
DlgPropertyLink, the link selection dialog, is now made modeless, so
that that user can select geometry sub-element directory from 3D view.
Derived from App::DocumentObjectT to add support of sub object
Also some minor changes to App::DocumentObjectT
Changed Gui::SelectionChanges to make use of SubObjectT