Allow to list contact groups in (paged) list (yet incomplete)
Add special config attribute 'group_filters' to specify a fixed list of groups to be listed in the leftmost pane, each having individual base-dn/filter parameters for contact listing
Finish hierarchical groups browsing in LDAP address books; add according UI elements and styles to the skins; adapt habavior of the compose address book widget
Add link to pop the address group stack; add animations when pushing/popping lists (in larry skin)
Describe the new option 'group_filters' in the sample config block
Refactored the LDAP address book into a generic LDAP wrapper class and an address book implementation (as already started in the devel-ldap-refactoring branch)
Prepare for VLV auto-detection (requries 'config_root_dn' config option)
Fix updating contacts
Don't save 'internal' or empty serialized values
Improve group members listing + fix VLV index usage
Fix autocompletion search with VLV support
Describe new options for LDAP address books
Various fixes in contact groups handling with LDAP directories
Optimmize memory usage by only fetching the necessary attributes used for contacts listing
Add configuration option 'specials' to hide specials 'anyone' and 'anonymous' from the ACL configuration dialog
Add some verbiage on the usage of 'acl_specials' in the default config.inc.php.dist.
Also use VLV for filter prefix matches
Add hook "message_check_safe"

This hook can be used by https://github.com/JohnDoh/Roundcube-Plugin-Global-Address-Book to mark messages as safe whose sender exists in the global address book
Support Alias-to-User lookup with virtuser_query
Improve rcube_utils::file2class() to not return duplicates