Bump cssnano to v2.

[ben-eb]

cssnano 2 features built in 'quiet' removal of plugins, so disabling calc isn't necessary now.

[MoOx]

You didn't run npm test ? ;)

[ben-eb]

Oh, the trailing comma is intentional? Didn't realise. 😄

[MoOx]

the trailing comma is intentional?

yes, it's to avoid useless change in diff: you put a trailing coma all the times & do not have to think about it after.

[bloodyowl]

@ben-eb yeah, they're nice to use for git diff, moreover they're likely to soon be tolerated in function calls https://github.com/jeffmo/es-trailing-function-commas

[ben-eb]

Looks like I need to update v2's plugin filter, at the moment the compression tests are failing. I'll write some integration tests for cssnext.

Edit: Actually, not much need. Just need to make some core optimisations PostCSS plugins instead.

[ben-eb]

Fixed up, but not passing on appveyor? 😟

[bloodyowl]

the error seems related to wadey/node-microtime#31

[MoOx]

seems a gyp compilation issue, I won't consider this as a failure :)

[magsout]

woot 👍 goood job @ben-eb