WIP: initial prototype

- Standardized event emitters
- Refactored transport.request to have a better handling of the state
- Added sniff event
- Improved abort handling

lib/Serializer.js

@@ -44,6 +44,7 @@ class Serializer {
   qserialize (object) {
     debug('qserialize', object)
     if (object == null) return ''
+    if (typeof object === 'string') return object
     // arrays should be serialized as comma separated list
     const keys = Object.keys(object)
     for (var i = 0, len = keys.length; i < len; i++) {