Prepare for 3.1.0

diff --git a/pom.xml b/pom.xml
index 6115cba..145bece 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,7 +30,7 @@
   </parent>
 
   <artifactId>maven-antrun-plugin</artifactId>
-  <version>3.0.1-SNAPSHOT</version>
+  <version>3.1.0-SNAPSHOT</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven AntRun Plugin</name>