Push dh-compat to 13. Ignore missing files in dh_missing

debian/control

@@ -3,7 +3,7 @@ Section: science
 Priority: optional
 Maintainer: Debian Astronomy Team <debian-astro-maintainers@lists.alioth.debian.org>
 Uploaders: Ole Streicher <olebole@debian.org>
-Build-Depends: debhelper-compat (= 12),
+Build-Depends: debhelper-compat (= 13),
                dh-exec,
                dh-python,
                libbz2-dev,

debian/rules

@@ -28,6 +28,9 @@ override_dh_auto_install:
 	    install
 	rm -f $(d)/usr/bin/*.py
 
+override_dh_missing:
+	dh_missing --list-missing
+
 override_dh_clean:
 	dh_clean
 	rm -f `cat .gitignore`