Dovecot v2.1.13 released
http://dovecot.org/releases/2.1/dovecot-2.1.13.tar.gz
http://dovecot.org/releases/2.1/dove....13.tar.gz.sig

- Some fixes to cache file changes in v2.1.11.
- fts-solr: Overlong UTF8 sequences in mails were rejected by Solr and
caused the mails to not be indexed.
- virtual storage: Sorting mailbox by from/to/cc/bcc didn't work.