add Schema#hasProperty; version bump

Author: ericgj

component.json

@@ -2,7 +2,7 @@
   "name": "json-schema-core",
   "repo": "ericgj/json-schema-core",
   "description": "JSON Schema core module",
-  "version": "0.0.16",
+  "version": "0.0.17",
   "keywords": [],
   "dependencies": {
     "ericgj/json-schema-uri": "*",

index.js

@@ -159,6 +159,10 @@ Schema.prototype.property = function(key){
   return this._properties[key];
 }
 
+Schema.prototype.hasProperty = function(key){
+  return has.call(this._properties,key);
+}
+
 // mix in each binding method into a Correlation object
 Schema.prototype.bind = function(instance){
   var ret = new Correlation(this,instance);