Merge pull request #463 from w3c/issue-177-singleLine-tests

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

Author: ajnelson-nist

shacl12-vocabularies/shacl-shacl.ttl

@@ -108,6 +108,7 @@ shsh:ShapeShape
 	sh:targetSubjectsOf sh:qualifiedMinCount ;
 	sh:targetSubjectsOf sh:qualifiedValueShape ;
 	sh:targetSubjectsOf sh:qualifiedValueShapesDisjoint ;
+	sh:targetSubjectsOf sh:singleLine ;
 	sh:targetSubjectsOf sh:uniqueLang ;
 	sh:targetSubjectsOf sh:uniqueMembers ;
 	sh:targetSubjectsOf sh:xone ;
@@ -295,6 +296,11 @@ 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