Create HierarchyExplorer
HierarchyExplorer->Navigate
Disable HierarchyExplorer if no target class
Cleanup...
Rename "Hierarchy Explorer" by "Class Hierarchy"
Small improvement...
ClassHierarchy->ShowRootLines = false;
Cleanup...
Quick navigate for class hierarchy explorer
Item "Class Hierarchy" in editor context menu
Merge branch 'feature/Hierarchy_Window' into develop
Release 2.0
-- Class Hierarchy Explorer
Merge branch 'release/2.0'