Update to Laravel 5.6

[rjsworking]

Hi

Update to L56, please.

Thanks in advance Cheers

[rodrigopedra]

PR #108 was merged to accomplish this!

The only thing missing is tagging a release...

But you can use a specific commit in your composer file, if you wish see this answer on stackoverflow.

[Tickthokk]

I hope we get a tag soon. Doing this doesn't feel good 😛

"htmlmin/htmlmin": "dev-master#e3d5e0b1e5019eb701ac68945510518b62d3ff50"

[FarshadGhanbari]

for laravel 5.6 : https://github.com/FarshadGhanbari/laravel-htmlmin