Updated release notes

Author: rijnb

src/site/apt/ReleaseNotes.apt.vm

@@ -11,6 +11,8 @@ Release Notes (Version ${project.version})
 
 * 1.50.3
 
+    * This release breaks compatiblity with earlier releases, to clean up the interface significantly.
+
     * Removed <<<Mapcode.encodeToShortest(lat, lon))>>> as this will produce a randomly chosen territory.
       You must specify a <<<restrictToTerritory>>> now.