Upgrade dependencies

[marcofugaro]

This PR upgrades these main dependencies:

• webpack
• webpack-dev-server
• css-loader
• style-loader
• sass-loader
• babel-loader
• eslint-loader
• url-loader
• file-loader
• node-sass

And these minor dependencies:

• lodash
• webpack-merge
• glob-to-regexp

Along with it, some packages require a newer version of node, since the dependencies require it as well. I think we should do a mayor for this reason.

The loader that changed their api are css-loader and sass-loader, I updated README, test and code to reflect these changes. Also I removed some deprecated options from test and examples (hmr for style-loader and minimize for css-loader)

Finally, I did not touch @webpack-blocks/typescript and @webpack-blocks/uglify since those are bigger tasks.

[marcofugaro]

CI is breaking on node 8 as expected.

[vlad-zhukov]

👍 if CI is green

[marcofugaro]

Alright, updated the travis node version and fixed the conflict.

[andywer]

Great stuff! And sorry for the hiccup…

Would anyone like to approve the PR? I can also force-merge it, but I guess that’s what brought us here in the first place…

[marcofugaro]

@andywer could you release a new version when you have time? 🙏

[andywer]

@marcofugaro Released as v2.1.0 🚀