v1.0.0

• Many parsing and tokenization tweaks to bring us into full compliance with the 14 November 2014 editor's draft of the CSS syntax spec. The most significant outwardly visible change is that quoted URLs like url("foo") are now returned as :function tokens and not :url tokens due to a change in the tokenization spec.
• Teensy tiny speed and memory usage improvements that you almost certainly won't notice.
• Fixed: A semicolon following a @charset rule would be omitted during serialization.
• Fixed: A multibyte char at the beginning of an id token could trigger an encoding error because StringScanner#peek is a jerkface.