build(css): build minified bundle

[ghost]

adds a minfied css bundle and uses it

closes #642

[ghost]

@jgthms here's why you should do this:

• prevents duplicative work after download, helping ensure bulma sites in the wild always looks like the docs site (helps prevent mangling of css by limiting need to do so)
• increases page speed of the docs site

I tested the docs site without autoprefixer and everything looks good. The argument we shouldn't be minifying because there were problems before seems moot, as the same argument could be made for autoprefixing as well. Please give it a whirl and let me know how it goes with autoprefixer.

[jgthms]

Nice work! 👍

I reckon it would be useful to keep both bulma.css and bulma.min.css. Some people might want the non-minified version as it's easier to read, if they want to copy some code, or get inspiration, which is easier than navigating through the .sass files.

[ghost]

@jgthms I'll do another sweep at this now that I've gotten an approval sign. Will ensure everyone gets what they want, and will look to add source maps if it makes sense (otherwise open another issue if needed).

[ghost]

@jgthms Took another pass. Don't see any more work to do. Please let me know if you need anything else to make this merge-friendly. Thanks!

[ghost]

@jgthms some individuals would like this merged. care to do us the honors if you're comfortable with the changes?

[1zaak]

Is this gonna be merged or not? My Bulma production build is 860++KB right now and I think this will decrease the size tremendously @jgthms

[ghost]

@1zaak I'll leave it to the maintainers to answer that. There's a conflict caused by an addition of css asset fingerprinting which, when I see, is usually a sign of overengineering in the App tier.

[1zaak]

Sorry I should correct this, it was my own mistake of importing a huge font sass file. Not the maintainers fault @JHabdas. I closed this ticket #1560