Bump version number to 3.10.3-git

This is not an announced realase, but this is version now installed on our
server.

debian/changelog

@@ -1,3 +1,9 @@
+gf (3.10.3-1) xenial bionic cosmic; urgency=low
+
+  * GF 3.10.3
+
+ -- Thomas Hallgren <hallgren@chalmers.se>  Fri,  5 Mar 2019 19:30:00 +0100
+
 gf (3.10-2) xenial bionic cosmic; urgency=low
 
   * GF 3.10

gf.cabal

@@ -1,5 +1,5 @@
 name: gf
-version: 3.10-git
+version: 3.10.3-git
 
 cabal-version: >= 1.22
 build-type: Custom