Fix pom.xml version to fit source code geohex version

Author: mattak

pom.xml

@@ -4,7 +4,7 @@
 
   <groupId>org.geohex.geohex4j</groupId>
   <artifactId>geohex4j</artifactId>
-  <version>1.0.0-SNAPSHOT</version>
+  <version>3.0.0-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>geohex4j</name>