#177: Update SHACL-SHACL to review sh:singleLine usage

Some syntax style borrowed from Issue 449.

References:
* #449

Signed-off-by: Alex Nelson <[email protected]>

Author: ajnelson-nist

shacl12-vocabularies/shacl-shacl.ttl

@@ -76,6 +76,8 @@ shsh:ShapeShape
 		sh:not, sh:or, sh:pattern, sh:property, sh:qualifiedMaxCount, sh:qualifiedMinCount, sh:qualifiedValueShape,
 		sh:qualifiedValueShape, sh:qualifiedValueShapesDisjoint, sh:qualifiedValueShapesDisjoint, sh:uniqueLang, sh:xone,
 		sh:minListLength, sh:maxListLength, sh:uniqueMembers ;
+	sh:targetSubjectsOf sh:singleLine ;
+
 
 	sh:targetObjectsOf sh:memberShape ; # memberShape-node
 	sh:targetObjectsOf sh:node ;        # node-node
@@ -260,6 +262,11 @@ shsh:ShapeShape
 		sh:maxCount 1 ;                 # multiple-parameters
 		# Not implemented: syntax rule pattern-regex
 	] ;
+	sh:property [
+		sh:path sh:singleLine ;
+		sh:datatype xsd:boolean ;	# singleLine-datatype
+		sh:maxCount 1 ;                 # multiple-parameters
+	] ;
 	sh:property [
 		sh:path sh:flags ;
 		sh:datatype xsd:string ;        # flags-datatype