0.11-2017-05-07

This release is dedicated to my beloved wife for all the love and support she gave me through years. If you are a company looking for (female) developers in Groningen area (the Netherlands), do not hesitate to contact her.

• Django REST framework integration. Check the Heroku demo here.
• Documentation fixes.
• PEP8 code fixes.
• Minor setup fixes related to moved screen-shots file.
• Added helper scripts to test with Firefox in headless mode. Describe
  testing with Firefox in headless mode in documentation.
• Validate the decimal field plugin - quantize the decimal value to the
  configured precision.
• Minor fixes in the float field plugin.
• Minor improvements in complex form element plugins (select, file) and
  form handler plugins (db_store, mail, http_respost) in order to
  simplify integration plugins and reduce code duplication.
• Minor Python3 fixes in range_select and slider form element plugins.
• Minor Python3 fixes in http_repost and mail form handler plugins.