Merge pull request #52 from vserdyuk/master #58

Job	Run time
Build and Test RoleMaskProxyModel Qt 5.15.2	6m 13s
Build and Test InsertProxyModel Qt 5.15.2	5m 58s
Build and Test ModelSerialisation Qt 5.15.2	6m 54s
Build and Test RootIndexProxyModel Qt 5.15.2	2m 14s
Build and Test GenericModel Qt 5.15.2	3m 44s
Build and Test RoleMaskProxyModel Qt 6.2.0	6m 55s
Build and Test InsertProxyModel Qt 6.2.0	7m 58s
Build and Test ModelSerialisation Qt 6.2.0	8m 25s
Build and Test RootIndexProxyModel Qt 6.2.0	6m 13s
Build and Test GenericModel Qt 6.2.0	2m 49s
	57m 23s

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