Added support for multiple validator identifiers for claims notices and marks
Merge pull request #1 from McAnix/master

Multiple Validator Support
merge changes from Mike O'Conell
add Mike to acknowledgements, add changelog
bump to ver 12, fix up XSDs
Added validatorID references to samples
removed domain:exDate per comment from Seth Goldman
Merge pull request #2 from McAnix/master

Added validatorID references to samples
Made some text changes to the validatorID references and description.