New major version : 0.9

What's new:

    * Add Admin API (create/delete user, stats, etc.)
    * Rebuild all the GUI:
        * Swipe to read (mobile compatible)
        * Keyboard shortcuts (type '?' and enjoy)
        * Gravatar support
        * Change font
    * Improve PubSubHubbud support (auto refresh subsciptions)
    * Update dependencies
    * Add Docker support
    * And more...