Prepack weekly release v0.2.46

Summary:
- Bugfixes, refactors
- extended use of simplification to prepack more code
- improved shape modeling
- Added ability to materialize objects without havocing
- new `--reproUnconditionally` and `--reproOnFatal` options in Prepack
  - creates zip file with all files needed to debug the failure
  - creates `repro.sh` script that can open Nuclide debugger, pre-populating the original arguments causing the failure

Reviewed By: NTillmann

Differential Revision: D9101750

fbshipit-source-id: c7a2a7fc1c7814f02937f786df01ec3cb8effe4e

package.json

@@ -1,6 +1,6 @@
 {
   "name": "prepack",
-  "version": "0.2.46-alpha.0",
+  "version": "0.2.46",
   "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": {