Upgraded findbugs-maven-plugin, 3.0.0 has issues with newer Maven versions (#355)

Author: madsop

pom.xml

@@ -257,7 +257,7 @@ Changelog of Pull Request Notifier for Bitbucket.
    <plugin>
     <groupId>org.codehaus.mojo</groupId>
     <artifactId>findbugs-maven-plugin</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.4</version>
     <configuration>
      <effort>Max</effort>
      <threshold>Low</threshold>