0.18.1

Changed

• If the given map already has a :filters / "filters" key,
  Flop.nest_filters/3 will now merge the derived filters into the existing
  filters. If the existing filters are formatted as a map (as produced by an
  HTML form), they are converted to a list first.
• use Flop will now also compile validate/2 and validate!/2 functions that
  apply the options of your config module.
• Allow setting default_limit and max_limit to false, which removes the
  default/max limit without falling back to global options.

Fixed

• Flop.bindings/1 was returning bindings for filters with nil values.