Include support for updating metadata element using a uuid and use for iso19115/iso19139 profiles

Hi,

Wondering whether these changes would be acceptable for inclusion in your code base.  We are looking to use your library, but for our use case we would like to be able to update using a jdom element created in our java process rather than loading from a file.   We also use a profile of iso19115/iso19139 so had to make some changes to support that.

While we can and will maintain a fork of your repo, if these changes are useful to others, it would be good if they could be included in your repo to make them more widely accessible.


Thanks,
CraigJ