[gimp] devel-docs: add point for <release> appstream data in release-howto.

[Jehan Pagès <jehanp src gnome org>]

commit 803917110d55db7ae97b24fd9e8cbef3c224b872
Author: Jehan <jehan girinstud io>
Date:   Wed Dec 27 23:16:11 2017 +0100

    devel-docs: add point for <release> appstream data in release-howto.

 devel-docs/release-howto.txt |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/devel-docs/release-howto.txt b/devel-docs/release-howto.txt
index 16671c0..2532338 100644
--- a/devel-docs/release-howto.txt
+++ b/devel-docs/release-howto.txt
@@ -17,6 +17,15 @@
      on, and how many changes to expect. An example message is:
      https://mail.gnome.org/archives/gnome-i18n/2016-October/msg00035.html
 
+ ( ) If this is a stable release, make sure we have a <release> tag
+     inside desktop/gimp.appdata.xml.in for this upcoming version. Some
+     installers may feature more prominently software with recent
+     releases if the appropriate tag was set (e.g. GNOME Software has a
+     "Recent Releases" category).
+     If a description is added, it may be featured in installers and
+     will be translatable (use <_p> or <_li> tags to make the strings
+     localizable).
+
  ( ) Wait until the date specified in the announcements, use this time
      to get bug fixes applied which don't modify strings.