Update all dependencies

[onigoetz]

Hello,

I am in the process of creating a few PRs to upgrade to PostCSS8 here and there.

This module doesn't need any special upgrade or breaking change, but since I was in the middle of it I thought I could still finish and send a PR.

This PR contains no breaking change since everything changed is in tests or devDependencies.

Dev dependencies updates include :

• Replace eslint-plugin-babel with @babel/eslint-plugin
• Replace babel-eslint with @babel/eslint-parser
• Upgrade from ava version 1 => 3
• Upgrade from eslint version 5 => 7
• Upgrade from semver version 5 => 7
• Upgrade from postcssversion 7 => 8
• Upgrade from del-cliversion 1 => 3

[onigoetz]

It seems that tests can't run on node 8 and fail with timeouts on 10 / 11

[alexander-akait]

@onigoetz Feel free remove node@8 from matrix

[onigoetz]

Also node 6 ? should it also be updated in package.json ?

[alexander-akait]

@onigoetz Late, not here

[alexander-akait]

@onigoetz Do you need help?

[onigoetz]

Sorry I didn't send a message sooner.
It seems that the tests fail because of a timeout, I don't know exactly why and can't reproduce locally.

I could need help to figure that part out :)

[alexander-akait]

Maybe just try increase timeout?

[onigoetz]

yes sure, I just wanted to make it the last resort, not the first thing I try

[coveralls]

Coverage remained the same at 95.38% when pulling 4cfc7bc on onigoetz:master into 9e798f0 on postcss:master.

[coveralls]

Coverage remained the same at 95.38% when pulling 4cfc7bc on onigoetz:master into 9e798f0 on postcss:master.

[alexander-akait]

Thanks, ready to merge or something else?

[onigoetz]

I think it's all good

[alexander-akait]

Thanks