Sqwish => uglifycss

[CharlesWall]

Sqwish has open issues and hasn't had a commit in 3 years.

ded/sqwish#10

lets use this.
https://www.npmjs.com/package/uglifycss

[austinkelleher]

Hey, @CharlesWall thanks for opening this issue. We are aware that Sqwish has bugs and is outdated. I opened up this PR (#2) a long time ago and it never got merged. What do you think about switching to clean-css instead?

[austinkelleher]

We should revisit my old PR. I'm currently in the process of making some large refactors to Lasso (lasso-js/lasso#222). In these changes, we are pulling in core Lasso plugins into Lasso, so this plugin will become part of Lasso core in Lasso v3.

[CharlesWall]

I think clean-css looks like a good choice. There are no serious bugs and it looks well maintained.