Update version to 3.0 for release.

Author: fmeunier

pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>xyz.meunier</groupId>
     <artifactId>wav2pzx</artifactId>
-    <version>2.1-SNAPSHOT</version>
+    <version>3.0</version>
     <packaging>jar</packaging>
     <dependencies>
         <dependency>