Release Newsboat 2.28

Lists below only mention user-visible changes, but the full list of contributors
for this release also includes: Jan Staněk, blank X, and sebashwa.

Added
=====

- Ability to go back to the previous set of search results. This introduces
    a new dialog, `searchresultslist`, which supports a new operation,
    `previoussearchresults` (bound to `z` key by default). The
    `searchresult-title-format` setting now supports one more placeholder, `%s`,
    which is replaced by the term you searched for (#1785, #2043) (bogdasar1985)
- Support for `enqueue` operation in the article list (#2023) (Dennis van der
    Schagt)
- New placeholder for `articlelist-format`, `%e`, which is replaced by the URL
    of the article's enclosure (#2023) (Dennis van der Schagt)

Changed
=======

- If an article has multiple links, `open-in-browser` will open the HTTP or
    HTTPS one. If article has no such links, then the last one to appear in the
    feed's source is picked. (Note: this is about the link that you see in the
    item's header, prefixed by "Link:" -- NOT about the links in the article
    itself) (#2060) (bogdasar1985)
- Updated translations: Brazilian Portuguese (Alexandre Provencio), Dutch
    (Dennis van der Schagt), German (Lysander Trischler), Italian (Mauro
    Scomparin), Polish (Michał Siemek), Russian, Ukrainian (Alexander
    Batischev), Spanish (Roboron3042), Turkish (Emir SARI)
- Bumped minimum supported Rust version to 1.57.0
- Updated vendored library Catch2 to 2.13.9, expected-lite to 0.6.0

Removed
=======

- Snap: i386 support. The package is now based on Ubuntu 20.04, which doesn't
    support i386 (#2058)

Fixed
=====

- Stop scrolling to top of article when window is resized (#1298) (Dennis van
    der Schagt)
- NextCloud News 18.1.0+: crashes when reloading feeds that have no author or
    title (#2102) (Alexander Batischev)
- Snap: "Error opening terminal: xterm-kitty". This fix comes at the cost of
    i386 support in Snap (#2058) (Gianluca Della Vedova, Alexander Batischev)
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