Comment 9 for bug 1367926

I've reviewed and squashed Mike's patches, and the branch collab/gmcharlt/lp1367926-unapi2 in the working/Evergreen repository is now ready for review:

  http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/collab/gmcharlt/lp1367926-unapi2

This branch also addresses the following concerns:

* lack of release notes
* character encoding
* the list of available formats (when given a U2 ID) now includes only the applicable ones

It also adds some unit tests.