v2.3.1

• Add get_field method to get field option.

class Setting
  field :admin_emails, type: :array, default: "huacnlee"
end

Setting.get_field(:admin_emails)
=> { key: "admin_emails", type: :array, default: "[email protected]", readonly: false }

• Add editable_keys to get keys that allow to modify.
• Add readonly_keys to get readonly keys.