looks like I don't need the xdmp:eval or xdmp:eval-in or xdmp:invoke anymore, but I'm adding xdbc:invoke-in just in case I add that test
fix #148, add an easy way for users to run filtered Pojo Facade queries.  This adds CombinedQueryBuilder which may become a foundation to build on in the future, but it's in the impl package for now because it's undocumented and for internal use only.  It will most likley change significantly in future releases.
add tests for new factory methods
add javadoc for newServerEval()
fix #13, default connections in examples to 8000, document that we no longer need to create a REST server before running the examples