Bump Standards-Version to 4.1.5, no changes.

debian/changelog

+pykdtree (1.3.1-2) UNRELEASED; urgency=medium
+
+  * Bump Standards-Version to 4.1.5, no changes.
+
+ -- Antonio Valentino <antonio.valentino@tiscali.it>  Thu, 05 Jul 2018 11:01:12 +0200
+
 pykdtree (1.3.1-1) unstable; urgency=medium
 
   * New upstream release.

debian/control

@@ -13,7 +13,7 @@ Build-Depends: debhelper (>= 11),
                python3-numpy,
                python-nose,
                python3-nose
-Standards-Version: 4.1.4
+Standards-Version: 4.1.5
 Vcs-Browser: https://salsa.debian.org/debian-gis-team/pykdtree
 Vcs-Git: https://salsa.debian.org/debian-gis-team/pykdtree.git
 Homepage: https://github.com/pytroll/pykdtree