[ANNOUNCE] New Committer - Thomas Heigl

[Andrea Del Bene]

The Apache Wicket team is happy to announce that Thomas Heigl has been 
voted in as a committer on Apache Wicket and also as a PMC member of the 
project! Thomas is an active member of the Wicket community since 2011 
and lately has greatly contributed fixing bugs and providing ideas and 
pull requests to improve Wicket performance.

We're looking forward to working with Thomas in the near future, so 
please join us in welcoming him to our project!

Andrea Del Bene
Apache Wicket PMC chair.