add hasChanged(attr) method to record

lib/base/attributes.js

@@ -202,6 +202,19 @@ exports.record = {
     return Object.keys(this.changes).length > 0;
   },
 
+  /**
+   * Returns `true` if the given attributes has changed
+   * 
+   * @section Record
+   * @method hasChanged
+   * @param {string} name - The attributes name
+   *
+   * @return {boolean}
+   */ 
+  hasChanged: function(name){
+    return Object.keys(this.changes).indexOf(name) !== -1;
+  },
+
   /**
    * Returns an object with all the changes. One attribute will always include the original and current value
    * 

package.json

@@ -1,6 +1,6 @@
 {
     "name": "openrecord",
-    "version": "0.11.3",
+    "version": "0.11.4",
     "description": "Active record like ORM for nodejs",
     "keywords": ["orm", "record", "sql", "sqlite3", "postgres", "pg", "mysql", "database", "activerecord"],
     "author": "Philipp Waldmann <philipp.waldmann@s-team.at>",