Added tests for "menus.views._get_bookmark(s)".
Added tests for "menus.views.BookmarkMixin".
Added more tests for "menus.views.BookmarkCreateUpdateMixin".
Added more tests for "menus.views.ListBookmarkView".
Added tests for "menus.views.CreateBookmarkView".
Added tests for "menus.views.(Update/Delete)BookmarkView".
Improved "core.tests" and added enabling flag in "core.signals.manage_author_permissions".
Improved docs and tests for new flag in "core.signals.manage_author_permissions" and "menus.signals.manage_bookmarks".
Increased version number (now 0.0.4).