Any plan to update node-sass to 4.x?

[youluna]

Sassaby is one of my project's devDependencies. I'm using node@8.x. When running npm install, I can always see c++ files not found as follows:
../src/sass_types/list.cpp:28:19: error: no matching function for call to 'sass_make_list'

As sass/node-sass#2012 says, node-sass added support for node 8 in 4.5.3.
But sassaby use node-sass@3.x. Do you have any plan to update the devDependency node-sass to 4.x ?

[youluna]

I forked this project, and upgrade node-sass to 4.x. My project's works well with new sassaby. However I can't make all test cases of sassaby pass , there is always one test failed.

So I will not creat PR, but release a new package named sassaby-next instead, just for my use. If you don't want me to do that, comment the issue to let me know and I will stop sassaby-next.

Thank you for awsome tool ! :)