Bump elm-webpack-loader + webpack + webpack-merge
Bump elm-webpack-loader + webpack + webpack-merge

elm-webpack-loaded 3.0.1 has a bug which causes the compilation to stop
completely when there was a single compilation error. 3.0.3 fixes that.

For more information please check:
https://github.com/rtfeldman/elm-webpack-loader/issues/53

Fixes #20

JonathanDDuncan/QuickSignEditor,JonathanDDuncan/QuickSignEditor