[FR] Hot Module Replacement support

[Benjamin David]

I was wondering if you had any plans to support Hot Module Replacement?
https://github.com/JeffreyWay/laravel-mix/blob/master/docs/hot-module-replacement.md

Thanks!

[Jacob Müller]

@benjamindavid HMR support would be awesome but I currently have no time to implement it.
A PR is always welcome :)

[Benjamin David]

@jackmu95 Thanks, will do!

[Bryant Hughes]

@benjamindavid it looks like you've got that HMR update in place, could we get that merged in here?