props: added query functionality to enumerate properties
props: revered accidental cmake change
props: added prop query to blocks + qa test
props: switched input args over to JSON
props: code cleanup and tweaks
Merge branch 'master' into props_query
gras: created uid API - replaces name and unique_id
gras: mutex fixes for uid API calls
props: began filling in pmc to/from ptree
props: began work on vector converters
props: added complex and vector converters
props: imply set from value presence