v4.0.0

Breaking changes:

• Migrate FFI to ES modules (#71 by @JordanMartinez)

• Make autocomplete take a String arg, not Boolean (#72 by @JordanMartinez)

• Move getBoundingClientRect to purescript-web-dom (#73 by @JordanMartinez)

• Drop duplicated set/getClassName and classList (#74 by @JordanMartinez)

  These three entities are already defined in purescript-web-dom