6.0.0

I'm extremely stupid and didn't commit as I go. To anyone reading this
I'm extremely sorry. A lot of these changes are very broad and I plan on
releasing Babel 6.0.0 today live on stage at Ember Camp London so I'm
afraid I couldn't wait. If you're ever in London I'll buy you a beer
(or assorted beverage!) to make up for it, also I'll kiss your feet and
give you a back massage, maybe.

packages/babylon/test/fixtures/esprima/es2015-array-pattern/with-object-pattern/expected.json

@@ -88,7 +88,7 @@
                   },
                   "properties": [
                     {
-                      "type": "Property",
+                      "type": "ObjectProperty",
                       "start": 6,
                       "end": 7,
                       "loc": {
@@ -120,7 +120,6 @@
                         },
                         "name": "a"
                       },
-                      "kind": "init",
                       "value": {
                         "type": "Identifier",
                         "start": 6,