Merge branch '3412449-attempt-an-upgrade' into '5.x'

entity_hierarchy.views.inc

...ty_hierarchy_microsite/entity_hierarchy_microsite.install

...site/tests/src/Functional/GenerateMenuUpgradePathTest.php

...lugin/views/argument/HierarchyIsChildOfEntityRevision.php

...ugin/views/argument/HierarchyIsParentOfEntityRevision.php

...gin/views/argument/HierarchyIsSiblingOfEntityRevision.php

src/Plugin/views/field/HierarchyDepth.php

src/Plugin/views/join/HierarchyInfo.php

src/Plugin/views/relationship/HierarchyRoot.php

src/Plugin/views/sort/TreeOrder.php

src/Query/HierarchyInfo.php

src/Query/TreeDepthSelect.php

src/Query/TreeRootSelect.php

src/Storage/QueryBuilderTrait.php

tests/fixtures/3284026-dump.sql.gz

...nstall/views.view.entity_hierarchy_test_children_view.yml

.../install/views.view.entity_hierarchy_test_fields_view.yml

...hierarchy_test_views/entity_hierarchy_test_views.info.yml

...nstall/views.view.entity_hierarchy_test_children_view.yml

.../install/views.view.entity_hierarchy_test_fields_view.yml