Declare compliance with policy 4.3.0

debian/control

@@ -1,7 +1,7 @@
 Source: aoetools
 Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Homepage: http://aoetools.sf.net
-Standards-Version: 3.9.8
+Standards-Version: 4.3.0
 Build-Depends: debhelper (>> 10~),
 Priority: optional
 Section: admin