Bundler-friendly entry point (#87)

* Use the browser entry point instead of a webpack build for `browser` in `package.json` (see [the intended use of the browser package.json field](https://github.com/defunctzombie/package-browser-field-spec) for justification).
* Loosen lodash & uuid version requirements to increase potential for package reuse by bundlers

Author: jpage-godaddy