Improve performance by not generating newlines in CSS

[JoJoDeveloping]

While investigating why my blog takes so long to build, I found this arcane line breaking mechanism, which is both slow and unnecessary. It can be made faster, see digitalsparky/cssminify#5. However, the best way to improve performance is to simply remove this feature. I don't entirely understand why it was necessary (the library is from 2012, maybe back then people used weird source control software that could not handle that, but git has no such issues), but anyways the files generated here are not added to VCS but instead served over the internet, where it should not matter.

PS: I have not actually tested whether this works, since I don't know Ruby. Please test before merging (or alternatively send me a link or something explaining how I can test this locally).

[digitalsparky]

Hi JoJo,

Thanks so much for your support; I'll have a look at this and merge changes with another pull request; it may take a little bit, depending on how my pain is.

Kind Regards,

Matt