Ditch ts-loader (for babel)

[JakeSidSmith]

In order to simplify our stack, and improve build times (and memory usage), we have decided to try ditching ts-loader, and instead rely on babel for all compilation.

Unfortunately babel is pretty shit, and so we need to specify 2 different loaders; 1 for js, 1 for ts.

Additionally, we've had to include several presets and plugins to allow the full (-ish, there's some things that still don't work - babel is shit) use of typescript features. This, however, also allows us to make use of these features in our js, and will work nicely with the changes that @nikolaevtomov is making to our https://github.com/dabapps/eslint-config-dabapps

[isidornygren]

Looks good!
Have you tested that const enums are working along with export = / import = whatever that was?

[JakeSidSmith]

Const enums are just treated as regular enums, so they should work.

export = / import = I believe is disallowed by our linting config, and even if it isn't... should not be allowed by humans.

[JakeSidSmith]

Have created a protected release branch for v0.2.x.
https://github.com/dabapps/create-webpack-config/tree/release-0.2.x