Fix authorship of the core classes
Wrap all exceptions
Add log msgs
Change ext migs names
Change ext migs names
Handle missing .groovy file earlier
Format
Print stacktrace of migration exception to stdout.
Improve XmlQueryTest.mig.xml
Try to load JAXB class from classpath if not found as Groovy class.
Improve XML query test
Fix AttrBean duplicity.
Add getConfig()
Add ExtElMigrationTest