* refactor css comments * workarounds for postcss-less location bugs * improve replaceQuotesInInlineComments * update changelog * fix comments in selectors * fix comments in values * use \ufffe instead of \0 because that's what these characters are for see http://www.unicode.org/faq/private_use.html#nonchar6 * fix quoted urls Co-authored-by: Georgii Dolzhykov <thorn.mailbox@gmail.com>