Log Message:
Update to 13.0.0

Changelog:
Changes

Over 1100 changes were merged in the server, with many hundreds more in existing \ 
or new apps. The main improvements include:

    Collaboration features
        Nextcloud Talk, a private videoconference software integrated with Nextcloud
            real-time and asynchronous communication with push notifications, \ 
calls and chat web and mobile devices
            Integration in business workflow with calendar invitations and calls \ 
directly from Nextcloud Files
            Screen and note sharing with participant moderation capabilities
            100% secure peer-to-peer, end-to-end encrypted calls, mediated by \ 
self-hosted server
        auto-completion of user names in comments and notification to the \ 
mentioned user
        support free/busy scheduling in native calendar applications like \ 
Thunderbird Lightning
        show meeting invites in the calendar
    End-to-End Encryption
        can encrypt data on a per-folder level rather than all-or-nothing approach
        does not require users to remember or exchange passwords
        does not require re-uploading data upon sharing
        features an optional off-line administrator recovery key
        allows full audit logging
        can be combined with our File Access Control feature so administrator \ 
can enforce aspects of End-to-end Encryption
        protects from identity theft with our Cryptographic Identity Protection \ 
feature
    This feature is in Tech Preview for Nextcloud 13 and does not yet implement \ 
sharing.
    User Interface
        new way of selecting files
        easy way to quickly copy or move to a location
        High DPI support
        admin menu integrated in one list
        no limitation to file uploads via the web interface
        user quota in the side bar
        social sharing (Twitter, G+, Facebook, Diaspora) now features a preview
        improved theming
    Performance
        decreased page load times with up to 50% and faster search
        80% faster LDAP and up to 10x faster external storage
        Server-side Encryption performance largely improved
    Other
        Support for PHP 7.2
        Support for PostgreSQL 10