Weekly release v0.2.49

Summary:
Fixes #2419 #2386 #2439 #2447 #2432 #2437 #2442

* Fix havoced binding not in optimized function
* Allow arrays with widened numeric properties to update index properties
* Fix nested for statement bailout with nested for-in
* Don’t record modified bindings for immutable bindings when havocing

Reviewed By: trueadm, sebmarkbage

Differential Revision: D9456957

fbshipit-source-id: f266b8cc73012b9c721f0f9eebd48347bf0e37ae

package.json

@@ -1,6 +1,6 @@
 {
   "name": "prepack",
-  "version": "0.2.49-alpha.0",
+  "version": "0.2.49",
   "description": "Execute a JS bundle, serialize global state and side effects to a snapshot that can be quickly restored.",
   "homepage": "https://github.com/facebook/prepack",
   "repository": {