Rename schedule to scheduler (#13683)

Author: gaearon

package.json

@@ -18,7 +18,7 @@
     "object-assign": "^4.1.1",
     "prop-types": "^15.6.2",
     "react-is": "^16.5.2",
-    "schedule": "^0.5.0"
+    "scheduler": "^0.9.0"
   },
   "peerDependencies": {
     "react": "^16.0.0"