bump version, add changelog

CHANGELOG.md

@@ -0,0 +1,8 @@
+## 2.0.0
+
+- MessageQueue changed location in core React Native. Bumping
+major version because this is a breaking change.
+
+## 1.33.0
+
+- Current version.

package.json

@@ -20,5 +20,5 @@
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
-  "version": "1.33.0"
+  "version": "2.0.0"
 }