Please make elm a peer dependencies

[bangzek]

Currently we got two elm when installing this package:
.../node_modules/create-elm-app/node_modules/elm-webpack-loader/node_modules/elm/bin/elm
.../node_modules/create-elm-app/node_modules/elm/bin/elm

FYI the upstream elm-webpack-loader already make elm a peerDependencies

[andys8]

Maybe related: #172 (comment)

[halfzebra]

Hello friends, thanks for raising this issue! 👍

I think there's enough reasons to move elm out of this package by now, I think it's good idea.
I'm not sure when I'll have time to work on this, most likely closer to the holiday time.

Otherwise PRs are very welcome, I'll do my best to support your efforts if you are interested in making a PR.