Use default browserslist config and auto setting more modules in babel

[ianks]

Browserslist

I think using the defaults that browserslist recommends is better than specifying exact versions, since they do a lot of the heavy lifting of deciding what makes sense for most users.

Babel Config

Using the auto setting for modules when using babel is recommended. From the @babel/preset-env docs:

Setting this to false will preserve ES modules. Use this only if you intend to ship native ES Modules to browsers. If you are using a bundler with Babel, the default modules: "auto" is always preferred.