message: Webpack use that the `browser` field by default, which is not ideal because the dist file has all dependencies bundled so webpack can't perform any module tree-shaking or de-duplication on the bundle. Switching to `unpkg` which is more appropriate for this type of bundle.
diff: "version": "19.0.0",
  "description": "The Blockstack Javascript library for authentication, identity, and storage.",
  "main": "lib/index",
  - "browser": "dist/blockstack.js",
  + "unpkg": "dist/blockstack.js",
  "scripts": {
  "browserify": "rm -rf ./dist/blockstack.js && browserify src/index.js --standalone blockstack -o ./dist/blockstack.js",
  "browserify-tests": "browserify src/index.js --debug --standalone blockstack -o ./tests/browserTests/bundle.js",
  