Echo JS 0.11.0

Yeah... for about the past 2 years, mostly been on internalized apps so stopped using most polyfils at that point.  Generally only support browsers with fetch and async function support, which is everything that's seen an update since late 2017.

I agree that if I supported IE11, would probably polyfill for fetch, but at this point, I'm starting to lean towards just using ecmascript modules directly in the browser for anything public facing, which definitely excludes IE11.