Updates to allow enumeration properties to be extended with new experimental enum values.

See https://github.com/OpenGridForum/DFDL/pull/32

Mike Beckerle

Apache Daffodil PMC | daffodil.apache.org

OGF DFDL Workgroup Co-Chair | www.ogf.org/ogf/doku.php/standards/dfdl/dfdl

Owl Cyber Defense | www.owlcyberdefense.com