2.0.0

Major:

• change return type for sibling nodes to be a DocumentFragment rather than an array. Makes it much easier to work with as inserting the value into the DOM is as simple as document.body.appendChild(el)

Minor:

• resolve #9 and #14 by doing a regex parse of the attributes manually. Since the string has already gone through the HTML parser, the outerHTML is structured as valid DOM so spaces between attributes are required.
• add contextual auto-escaping as per https://developers.google.com/closure/templates/docs/security
  • DOM Level 0 event properties
  • URIs and URLs
  • HTML value encoding
• add tests for contextual auto-escaping
• switch to use const and let
• add comments and spacing for better visual organization
• fixed sauce connect and coveralls reporting