TODO

Check uid on cloning
Tests for Form::Data::Processor::Field::clear_empty
Tests for Form::Data::Processor::Field::Repeatable
Tests for actions

POD: add info for read only attributes
POD: Form::Data::Processor::Role::Fields add info about has_errors vs num_errors

I hate FDP::Field::Repeatable/fallback!
    Have an idea.
    For each field there are should exist prototypes.
    And $field->attr actually should do $field->proto->attr

Add actions namespace
    FDP::Actions
        trim
        lc
        uc

    extends 'FDP::Form';

    has '+actions_namespace" => (
        default => [
            '+My::Actions',     # For My::Actions
            'My',               # For FDP::Actions::My
        ]
    );

    has_field 'allowed_email' => (
        apply => [
            { input_transform => 'trim' },

            { check     => 'email' },
            { check     => 'domain_blacklisted', args => [ 'mailinator.com', 'blacklisted.ru ] },
            { transform => 'do_transform', args => [ 'with, 'args' ] },
        ]
    );