ST6RI-636 Changed the multiplicity lower bound of Base::things to 1.

- This is consistent with the specification model for things.

Author: seidewitz

sysml.library/Kernel Libraries/Kernel Semantic Library/Base.kerml

@@ -31,7 +31,7 @@ standard library package Base {
 		feature self: DataValue redefines Anything::self;
 	}
 
-	abstract feature things: Anything [0..*] nonunique {
+	abstract feature things: Anything [1..*] nonunique {
 		doc
 		/*
 		 * things is the top-level feature in the language.
@@ -87,7 +87,7 @@ standard library package Base {
 	multiplicity zeroToMany [0..*] {
 		doc
 		/*
-		 * oneToMany is a multiplicity range allowing any cardinality of ozero or more
+		 * zeroToMany is a multiplicity range allowing any cardinality of zero or more
 		 * (that is, no restriction).
 		 */
 	}