JAXB TODO
0.6 Release
- Attachments
- ObjectFactorys
- IDRef
- mixed content
- Unsupported types: URI, xs:any, Document
- Validation
- Type adapters

XPath TODO;
- descendent/parents
- expressions
- selectSingle/selectNodes??

Versioning:
- Schema contains statements on how to build model:
  <stx:new class="Customer">
  <stx:set/>
  
XSLT???
