Weekly release v0.2.47

Summary:
Weekly release v0.2.47:
- Many bug fixes
- Progress in support for nested optimized functions
- Fixing source map support
- Improved support for abstract behavior in switch statements
- Reduced memory usage of Prepack

Reviewed By: cblappert

Differential Revision: D9230689

fbshipit-source-id: 2094183fe4183089dfa584b865c9997147475e45

package.json

@@ -1,6 +1,6 @@
 {
   "name": "prepack",
-  "version": "0.2.47-alpha.0",
+  "version": "0.2.47",
   "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": {