upgrade to asm 7.2
diff --git a/pom.xml b/pom.xml
index d387e07..a9a948e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -68,7 +68,7 @@
     <mavenVersion>3.0</mavenVersion>
     <javaVersion>7</javaVersion>
     <currentVersion>${project.version}</currentVersion>
-    <asmVersion>7.0</asmVersion>
+    <asmVersion>7.2</asmVersion>
   </properties>
 
   <contributors>