Finalize changelog for 2.5.3-2pureos1

debian/changelog

+openexr (2.5.3-2pureos1) byzantium; urgency=medium
+
+  * Merge with Debian unstable, remaining change:
+    - Suppress building documentation package (PT: #97)
+
+ -- Matthias Klumpp <matthias.klumpp@puri.sm>  Mon, 12 Oct 2020 14:58:20 +0200
+
 openexr (2.5.3-2) unstable; urgency=medium
 
   * Upload to unstable (Closes: #959444)