Prepare 0.3.0 release (#11)

Author: sophokles73

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>org.itsallcode</groupId>
     <artifactId>openfasttrace-asciidoc-plugin</artifactId>
-    <version>0.3.0-SNAPSHOT</version>
+    <version>0.3.0</version>
     <packaging>jar</packaging>
 
     <name>OpenFastTrace AsciiDoc Importer</name>