elfeed (3.0.0-1) unstable; urgency=medium

    Emacs 26 introduces a new "record" type, and cl-defstruct objects used
    by Elfeed as its database format are now based on this type. This
    unfortunately changes (and breaks) Elfeed's index format. Prior to
    this release, Emacs 26 could not open an Emacs 24–25 index and vice
    versa.

    As of Elfeed 2.4.0, Elfeed running under Emacs 26 will automatically
    and quietly upgrade an Emacs 25 database index for Emacs 26. THIS
    UPGRADE IS IRREVERSIBLE and the database can no longer be used with
    Emacs 25. A one-time backup copy ("index.backup") of the original
    Emacs 25 index is created before performing the upgrade. If Emacs 25,
    whether running this or any prior Elfeed release, loads the new
    database format, it will see an empty database as if starting from
    scratch.

 -- Lev Lamberov <dogsleg@debian.org>  Fri, 20 Jul 2018 15:00:06 +0500