[AppStream] AppStream 0.11.7 released!

[Matthias Klumpp]

Hi!
Here is a new AppStream release, making web-application components
fully supported in AppStream now (and not just an API quirk as they
were before) and adding URL validation via curl to appstreamcli.

The URL validation is done in case curl is found on the system, so
libappstream didn't gain a dependency on a network library due to
this.

Tarballs available here: http://www.freedesktop.org/software/appstream/releases

Version 0.11.7
~~~~~~~~~~~~~~
Released: 2017-10-22

Notes:
 * The appstreamcli validation commands now use curl if it is
available to check all
   URLs in the metadata for existence.
   If you don't want this behavior, pass "--nonet" to appstreamcli.
There might also
   be false positives (one is known with the KDE bugtracker) that need
to be investigated,
   so feedback on this new feature is welcome.

Features:
 * validator: Check all urls for validity (Matthias Klumpp)
 * validator: Check web-application components for missing tags
(Matthias Klumpp)
 * Add API to retrieve the AppStream library version (Matthias Klumpp)
 * apt: Allow fetching 128x128 at 2 HiDPI icons (Rico Tzschichholz)

Specification:
 * Add the "url" launchable type (Dimitrios Christidis)
 * spec: Clarify some icon details in the collection data (Marius Vollmer)
 * spec: Allow <icon> tags in generic components (Marius Vollmer)
 * spec: Specify the web-application component type (Matthias Klumpp)

Bugfixes:
 * Fix endless loop when validating screenshots (Matthias Klumpp)
 * ascli: Show a list of component-types when --help is passed to
new-template (Matthias Klumpp)
 * validator: Drop the wget fallback, making missing curl only an info
(Matthias Klumpp)
 * meson: Properly define header-file in gir (Rico Tzschichholz)

Translation:
 * Norwegian Bokmål [new!]
   - Allan Nordhøy
 * Swedish
   - Anders Jonsson
 * German
   - Andreas Kleinert
 * Chinese (Traditional)
   - Chang-Chia Tseng
 * Dutch
   - Heimen Stoffels
 * Italian
   - Milo Casagrande
 * Czech
   - Pavel Borecki
 * Polish
   - Piotr Drąg
 * Ukrainian
   - Yuri Chornoivan