- changed default uid handling to UID2UID (means keep them unchanged), as the other modes created doublicates on client and server, as the client did not understand that the server changes his uid's (against the RFC specs).
- ability to delete events (not yet InfoLogs!), by tracking the id's of the GET request of the client and deleting the ones NOT send back to the server in PUT requests
- added etag handling to allow to reject put requests if the calendar is not up to date (HTTP_IF header with etag in client PUT requests) and to report unmodified calendars to the client (HTTP_IF_NONE_MATCH header with etag gets 304 Not modified response)
- returning 501 Not implemented response, for WebDAV/CalDAV request (eg. PROPFIND), to let the client know we dont support it
- ability to use contacts identified by their mail address as participants (mail addresses which are no contacts still get written to the description!)
- support uid for InfoLog (requires InfoLog version >= 1.5)
