Ship an es5 compiled package?

Would you be able/willing to ship the package to npm compiled down to es5? 

This would fix toolchains (like create-react-app) that choke on es6 syntax appearing too early during package loading, causing errors like:
```
SyntaxError: Unexpected token punc «,», expected punc «:» [./~/enml2html/lib/enml2html-helper.js:4,0]
```