1.1
This releases add the "UrlMapper Creator" and "UrlMapper Importer" roles which can then be used for solution specific permissions. The roles are also used for the display settings of the UrlMapper ribbon: it will now only be displayed to Sitecore Admins and UrlMapper Importers.
The code has been extended such that it now allows you to pass the original URL from the headless proxy to Sitecore. Check the source code comments for more information.