• Postgres: Support tables in a schema within the Postgres database through roundcube's db_prefix option, for example "rcschema.". (Fixes #495)
• readonly attribute for preset addressbooks was not honored for accounts for that the user had never saved settings (Fixes #497)
• Improvement: Do not query CardDAV addressbook when no communication is needed (#500)
• Improvement: Store password placeholders plaintext in the database (#498)
• Fix: null discovery_url would not be updated in preset even if fixed
• Fix OAuth Bearer token authentication in roundcube 1.7 (#501)