# Changes from yacker ShEx2:
# 
# + '*' in 2nd pos of REPEAT_RANGE so e.g. {2,*} === {2,}
# ~ code names are iris. this changes existing semantic actions as follows:
#   <S> { :p1 . %GenX{ blah blah blah %} }
#   PREFIX GenX: <http://...GenX> <S> { :p1 . %GenX:{ blah blah blah %} }
#   empty code names %{ ... %} are parsed as empty relative URLs: %<>{ ... %}
# + ATPNAME_NS, ATPNAME_LN terminals to parse e.g. @ex:foo which looks like a LANGTAG
# ~ a is an iri (not just for predicates) enabling e.g. <reif> { rdf:predicate (a) }
# ~ groupShapeConstr can only have ORs (no ANDs) so no <S1> { :p1 @<S2> AND @<S3> }
# + includeSet parallels inclPropertySet (&<A><B><C>) e.g. <S3> &<S1> <S2> { ... }
# + factored out (labeled) productions for startActions and semanticActions
# ~ BNodes can have stringFacets
# - ANON terminal (not referenced)