Release v1.0.1

Bugfixes, new features, recommended for all users

• Fix issue where multiple forms on the same page may not submit correctly
• Add feature to pass additional HTML attributes that will be added to the <form> element when
  rendered on the page. Example added to README.md
• Simplified identifying and returning form markup upon submission

Release v1.0.0

Version bump to stable for submission to the ProcessWire modules directory.