v2.2.0

• Add encodeNonAsciiHTML function 03b9143
  • Bit of a mouthful, but probably what most users expect; same as encodeHTML, but skips characters that are perfectly valid in ASCII and HTML.
• Add escapeUTF8 function 1ea2418
  • Useful for escaping content in a space-saving manner, when charsets aren't an issue.
• Use string codepoint methods when available 1e5aa22
  • Restores compatibility with Node < 4.
• Add doc comments for most methods, deprecate some methods 8b1bc21

v2.1.0...v2.2.0