temporarily comment out tidy plugin as it is breaking somehow with 'mvn release:prepare' , not with tidy:check, tidy:pom doesn't fix it, and there is no indication what the problem is
diff --git a/pom.xml b/pom.xml
index 639a7b4..54f28a4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1554,6 +1554,7 @@
                     </bundles>
                 </configuration>
             </plugin>
+            <!-- FIXME 
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>tidy-maven-plugin</artifactId>
@@ -1566,6 +1567,7 @@
                     </execution>
                 </executions>
             </plugin>
+            -->
         </plugins>
         <extensions>
             <extension>