Release automation (#1720)

* Create autoamtic release script.

* Add changelog update date script.

* Improve release scripts.

* Apply suggestions from code review

Co-Authored-By: nventuro <nicolas.venturo@gmail.com>

* Apply suggestions from code review

Co-Authored-By: nventuro <nicolas.venturo@gmail.com>

* Remove moment dependency.

package.json

@@ -18,7 +18,8 @@
     "lint:js:fix": "eslint . --fix",
     "lint:sol": "solhint --max-warnings 0 \"contracts/**/*.sol\"",
     "prepack": "npm run build",
-    "version": "scripts/version.js",
+    "release": "scripts/release/release.sh",
+    "version": "scripts/release/update-changelog-release-date.js && scripts/release/update-ethpm-version.js",
     "test": "npm run compile && scripts/test.sh"
   },
   "repository": {