Merge branch 'release/1.4.5' into production

lib/mysql.js

@@ -129,7 +129,7 @@ require('util').inherits(MySQL, SqlConnector);
 MySQL.prototype.query = function (sql, callback) {
   var self = this;
   if (!this.dataSource.connected) {
-    return this.dataSource.on('connected', function () {
+    return this.dataSource.once('connected', function () {
       this.query(sql, callback);
     }.bind(this));
   }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "loopback-connector-mysql",
-  "version": "1.4.4",
+  "version": "1.4.5",
   "description": "MySQL connector for loopback-datasource-juggler",
   "main": "index.js",
   "scripts": {