[jdom-interest] Doctype entity declaration

[Jason Hunter]

Harry Evans wrote:
> 
> It just seems incomplete that SAX parses the entity, but JDOM doesn't store
> that info. If there isn't anyone working on this, I might try to implement
> it, if anyone has any ideas on how it might work and other types that should
> also be supported (if any).

It's so nice when someone spots a missing piece and instead of
complaining offers to help!

This is something in our TODO.  You're welcome to propose a design. 
It's something Brett's signed up to do, but he's fallen off the list
lately.  You may want to ping him at brett at jdom.org.

-jh-