-- Updates from version 0.4.2
DROP INDEX users_username_id_idx;
-ALTER TABLE users ADD UNIQUE (username, mail_host);
+ALTER TABLE users ADD CONSTRAINT users_username_key UNIQUE (username, mail_host);
ALTER TABLE contacts ALTER email TYPE varchar(255);
TRUNCATE messages;
+
+-- Updates from version 0.5.1
+-- Updates from version 0.5.2
+-- Updates from version 0.5.3
+-- Updates from version 0.5.4
+
+ALTER TABLE contacts ADD words TEXT NULL;
+CREATE INDEX contactgroupmembers_contact_id_idx ON contactgroupmembers (contact_id);
+
+TRUNCATE messages;
+TRUNCATE cache;