Bump regenerator-transform version to 0.15.2.

Author: benjamn

packages/transform/package.json

@@ -2,7 +2,7 @@
   "name": "regenerator-transform",
   "author": "Ben Newman <bn@cs.stanford.edu>",
   "description": "Explode async and generator functions into a state machine.",
-  "version": "0.15.1",
+  "version": "0.15.2",
   "main": "lib/index.js",
   "keywords": [
     "regenerator",