JADN information modeling language Release Candidate

At last week's working meeting the latest updates to the JSON Abstract Data Notation standard were approved for submission to the TC.  This version aligns the spec with the latest OASIS template and includes many editorial updates but makes no substantive changes that affect the OpenC2 language spec or actuator profiles.  In particular this version adds a section on Entity Relationship Diagrams based on experience applying JADN to design efforts beyond OpenC2.  At the June 16 TC meeting we will request approval to submit WD-02 to OASIS for publication as a Committee Specification.  OASIS will then conduct a Special Majority Vote of the TC members.  If the SMV passes, OASIS will then conduct one or more public review cycles before publication as a CS.  This is a last call for comments before submitting a package for the TC SMV.  The release candidate is available at  https://github.com/oasis-tcs/openc2-jadn/blob/working/jadn-v1.0-wd02.md .