Fix pngj version unadvertedly modified by the release script

Author: aaime

plugin/png/pom.xml

@@ -19,7 +19,7 @@
     <dependency>
       <groupId>ar.com.hjg</groupId>
       <artifactId>pngj</artifactId>
-      <version>2.0-SNAPSHOT</version>
+      <version>2.0.1</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>