Doc stuff merged in "Use RHEL 7-compatible appdata filename"

https://sourceforge.net/p/tuxpaint/tuxpaint/merge-requests/13/

docs/CHANGES.txt

@@ -7,7 +7,7 @@ Various contributors (see below, and AUTHORS.txt)
 http://www.tuxpaint.org/
 
 
-2022.June.26 (0.9.29)
+2022.June.29 (0.9.29)
   * Bug Fixes:
     ----------
     * Opening and immediately dismissing Color Mixer could cause
@@ -38,6 +38,12 @@ http://www.tuxpaint.org/
       (See https://sourceforge.net/u/wjjjjt/tuxpaint/ci/b4aa697474e1cc60b6faac80297cc66a602f54fd/)
       Will Thompson <https://sourceforge.net/u/wjjjjt/profile/>
 
+    * Use RHEL 7-compatible appdata filename
+      + Rename metainfo file to appdata
+      + Fix detection of xdg-icon-resource
+      (See https://sourceforge.net/u/wjjjjt/tuxpaint/ci/4120af3b5f78ad69819b35ec821974081194c475/)
+      Will Thompson <https://sourceforge.net/u/wjjjjt/profile/>
+
     * Adding "2DGraphics" (and hence "Graphics") and "KidsGame" (and hence
       "Game") to the categories listed in "tuxpaint.desktop" launcher for
       FreeDesktop systems (e.g., Linux)