2.0.0

• Support for Node 4+ as well as 0.10 & 0.12
• Switch to Cheerio instead of JSDom for compatibility with a wider range of
  Node versions
  • this means that the HTML you provide in your template will be closer to
    the output of swig-email-templates. JSDom added in html, body, tbody tags
    where Cheerio doesn't
• Switch back to the the original 'juice' which is now more actively maintained
  • this version of juice also inlines images using data: URLs
  • be mindful that juice will fetch external resources for inlining, which can
    take some time
• At the same time it made sense to refactor the API a bit:
  • the library presents itself as a class with a constructor method
  • rewriteUrl is now an option on EmailTemplates instead of an extra argument
    to render()
  • commandline tool no longer takes 'render' as a parameter
• Add support for setting filters on the swig instance
• Much more comprehensive documentation