searching in the vcard chooser when merging addresses (press '/') nice speedup in pc_query, thanks to Leandro Lucarella better support for broken vcards auto creating missing db directories more bugfixes
0.6
assorted bugfixes, see git log keyring support
0.5.1
fine for you, there is no need to upgrade. Database deletion should not be necessary.
0.5
multi account support support for more contenttypes/carddav servers all vcards should have a UID (required by RFC 6352 and enforced by Owncloud 5)