[AppStream] AppStream 0.15.5 released!

[Matthias Klumpp]

Hello!
Another AppStream release is out, bringing a way to denote the
internet requirements of applications, as well as bringing a proper
solution for components taking over IDs from superseded/renamed
components.
This release also includes a large chunk of validator improvements.

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

Cheers,
    Matthias

Version 0.15.5
~~~~~~~~~~~~~~
Released: 2022-08-22

Features:
 * validator: Allow severity downgrade of releases-not-in-order for GNOME
 * validator: Perform stricter integer validation
 * validator: Check for url redefinitions
 * Implement the "replaces" tag
 * Add convenience function that check if component is free by license
and origin
 * qt: Add wrappers for AsComponent isFree/supports/replaces
 * Always add untranslated component names to the search index
 * validator: Validate the "internet" relation item
 * validator: Add validation for memory relation
 * Implement internet relation item

Specification:
 * spec: Specify a proper "replaces" tag
 * spec: Add an <internet/> kind to requires/recommends/supports

Bugfixes:
 * validator: Don't permit overriding the unknown root tag issue
 * compose: Don't crash if metainfo file contains an invalid stock icon
 * spdx: Fix possible crash when NULL is passed to is_free_license
 * compose: Don't synthesize components for desktop files of settings apps
 * Return the correct values in as_display_length_kind_from_px()
 * validator: Distinguish translatable from not-translatable tags in
duplicate checks

Miscellaneous:
 * Silence static analyzer false-positives based on GCC version
 * data: use lxml to get the XDG categories

Contributors:
 JakobDev, Philip Withnall, Pino Toscano, Matthias Klumpp

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