Specified the 1.5 SE as execution environment
Add an EntityResolver that handles namespace verification. The choosen implementation rilies on the fact, that the input data is well formed and must not be validated in a time costly manner. This concludes the most pressuing issue of #5.
Revert to the previous version where DTD was defined.
The database product is always needed when the input method is not without DB. This concludes #24.
When serializing a configuration always use the most current serializer. This conclude #11.
Updated to version 1.1.1 This concludes #23
Run most of the tests
Updated to exclude plugin tests
