Update changelog and about.cfg

changelog

@@ -290,6 +290,8 @@ Version 1.13.4+dev:
    * Recognize hotkey release events
    * Allow changing keybindings for scrolling the map.
    * Fix the move-to-targets candidate action of the default AI ignoring tunnels
+   * Replace wmlxgettext tool with new python3 implementation by Nobun:
+     https://github.com/AncientLich/wmlxgettext-unoff/
 
 Version 1.13.4:
  * Language and i18n:

data/core/about.cfg

@@ -1290,6 +1290,10 @@
         name = "Nathan Walker (RiftWalker)"
         email = "nathan.b.walker@vanderbilt.edu"
     [/entry]
+    [entry]
+        name = "Nobun"
+        comment = "wmlxgettext"
+    [/entry]
     [entry]
         name = "Oleg Tsarev"
         email = "zabivator@gmail.com"