Update autoprefixer to the latest version 🚀

Version 7.0.0 of autoprefixer just got published.

Dependency	autoprefixer
Current Version	6.7.7
Type	devDependency

The version 7.0.0 is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of autoprefixer. Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

Release Notes

7.0 “Coelestem adspicit lucem”

Autoprefixer 7.0 uses PostCSS 6.0, Browserslist 2.0 and caniuse-lite.

Browserslist 2.0

Browserslist 2.0 and caniuse-lite by @ben-eb are the main changes in Autoprefixer 7.0. We wrote an article about these changes:

> Autoprefixer 7.0 and Browserslist 2.0

Breaking Changes

Node.js stopped 0.12 support in January 01. So PostCSS dropped Node.js 0.12 from all tests. Please update your Node.js version to 4.0 or 7.0.

IE has very basic support of Grid Layout. So Autoprefixer added -ms- prefixes and change property syntax. Unfortunately, IE supports a really small subset of Grid Layout. So prefixes were not really useful. This is why we disabled Grid Layout prefixes by default. But you still can enable it:

autoprefixer({ grid: true })

Babel

Autoprefixer was one of the biggest CoffeeScript projects. We thought to rewrite it, but reasons were small, and work was big. But @Semigradsky used great decaffeinate tool for automatically CoffeeScript → ES6 converting, and now all Autoprefixer sources are written in JS.

PostCSS 6.0

New PostCSS uses stream parser and uses less memory. Also, it uses less space in node_modules.

Other Changes

Use ^ for Browserslist dependencies, instead of ~.
Fix -ms-grid-column-align.
Move tests to Jest.

Not sure how things should work exactly?

There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html) and of course you may always [ask my humans](https://github.com/greenkeeperio/greenkeeper/issues/new).

Your Greenkeeper Bot :palm_tree:

hypermodules / hypermodul.es