Bugfix methods get_metadata,  get_directory_listing, and get_bulk_metadata of class TinyDAV, to append a trailing slash to the path, as seems to be required for webdav collections - in the case of get_metadata it might as well be directory instead of a file directory; the server will then order a redirect to the diectory which must be handled accordingly
Bugfix methods get_overall_space, and get_used_space, to be able to deal with empty root
Bugfix methods get_directory_listing, and get_bulk_metadata, not to include root directory in result
Bugfix class MetadataCchingStore, do not include the directory itself in the listing
fix method  get_metadata of class MetadataCachingStore