Set version to 3.1.0

Author: cgdecker

pom.xml

@@ -28,7 +28,7 @@
   <groupId>com.google.code.java-allocation-instrumenter</groupId>
   <artifactId>java-allocation-instrumenter</artifactId>
   <packaging>jar</packaging>
-  <version>3.0-SNAPSHOT</version>
+  <version>3.1.0</version>
 
   <name>java-allocation-instrumenter</name>
   <description>