Weekly release v0.2.7: Refinement and simplification

Summary: Basic expression simplification and refinement with path conditions. Various small improvements.

Reviewed By: yinghuitan

Differential Revision: D5913534

fbshipit-source-id: efb259347d5300abae0ce50d0267134aaeeab853

package.json

@@ -1,6 +1,6 @@
 {
   "name": "prepack",
-  "version": "0.2.7-alpha.0",
+  "version": "0.2.7",
   "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": {