feat: standalone bundler

package.json

@@ -2,7 +2,7 @@
   "name": "nexe",
   "description": "Create a single executable out of your Node.js application",
   "license": "MIT",
-  "version": "2.0.0-next.13",
+  "version": "2.0.0-next.14",
   "contributors": [
     "Craig Condon <craig.j.condon@gmail.com> (http://crcn.io)",
     "Jared Allard <jaredallard@outlook.com>",
@@ -33,6 +33,7 @@
     "node": ">=6"
   },
   "dependencies": {
+    "@calebboyd/semaphore": "^1.3.1",
     "app-builder": "^5.2.0",
     "caw": "^2.0.1",
     "chalk": "^2.4.1",
@@ -42,6 +43,7 @@
     "got": "^8.3.1",
     "minimist": "^1.2.0",
     "mkdirp": "^0.5.1",
+    "multistream": "^2.1.1",
     "ora": "^2.1.0",
     "pify": "^4.0.0",
     "resolve-dependencies": "^2.1.1",
@@ -55,6 +57,7 @@
     "@types/minimist": "^1.2.0",
     "@types/mkdirp": "^0.5.2",
     "@types/mocha": "^5.2.0",
+    "@types/multistream": "^2.1.1",
     "@types/ora": "^1.3.4",
     "@types/pify": "3.0.2",
     "@types/rimraf": "2.0.2",