xlink namespace. Fixes #5.
Corrections made to the extended-poa.xml
Remove phone and fax tags
Removed TODO comment.
Merge pull request #20 from nlisgo/feature/elife-extended_poa

Corrections made to the extended-poa.xml
Merge pull request #29 from gnott/colons

accidentally closed over at https://github.com/elifesciences/elife-poa-xml-generation/pull/19