4.1.0

• Add support for ActiveRecord and ActionView 5.1
• Add support for Ruby 2.4
• Support calling search_for on an STI subclass, returning only records of the subclass type. (#112)
• Inherited search definitions: when defining search fields on both STI parents and subclasses, the subclass can now be searched on all fields, including those inherited from the parent. Only works for STI classes. (#135)
• Add 'tomorrow' and 'from now' keywords for searching future dates (#162)

4.0.0

• Drop support for Ruby 1.9
• Drop support for ActiveRecord 3, 4.0, and 4.1
• scoped_search registration deprecates :in in favor of :relation, and
  :alias in favor of aliases: [..] to avoid clash with Ruby reserved words.
• sort helper: any HTML options must now be given as a keyword argument,
  instead of the third argument, i.e. html_options: {..}
• sort helper now takes hash of url_options, defaulting to an unfiltered
  params. Call params.permit(..) and pass in the result to safely generate
  URLs and prevent non-sanitized errors under Rails 5.
• Auto completion: remove autocomplete_* JavaScript helpers in favor of jQuery
  method provided via asset pipeline. Call $(..).scopedSearch on autocomplete
  text boxes to activate.
• Auto completion: escape quotes in listed values (#138)
• Add :validator option to definitions to validate user's search inputs
• Fix incorrect association conditions being used on through relations
• Use #distinct on Rails 4+
• Test Rails 5.0.x releases, test latest AR adapters