[maven-release-plugin] prepare for next development iteration

Author: line-o

pom.xml

@@ -12,7 +12,7 @@
 
     <groupId>org.exist-db</groupId>
     <artifactId>exist-function-documentation</artifactId>
-    <version>1.2.2-SNAPSHOT</version>
+    <version>1.3.1-SNAPSHOT</version>
 
     <name>XQuery Function Documentation</name>
     <description>XQuery Function Documentation package for eXist-db</description>