Typescript

There should be no visible changes from this release ¯_(ツ)_/¯
But all of the source files have been upgraded to typescript.

Normally I would set this as a patch release, but I making it a major version as I am concerned about changes to have javascript and typescript handle exports.

I have had to use the following a bit

Imports

var a = require("a")
⇓
import {a} from "a"
or 
import * as a from "a"