def merge_template_options(default_options, template_key, custom_options = {})
      template_options = configuration.template_options.fetch template_key, {}
      options = Wingtips::HashUtils.deep_merge(default_options, template_options)
      Wingtips::HashUtils.deep_merge(options, custom_options)
    end
def merge_template_options(default_options, template_key, custom_options = {})
      template_options = configuration.template_options.fetch template_key, {}
      options = Wingtips::HashUtils.deep_merge(default_options, template_options)
      Wingtips::HashUtils.deep_merge(options, custom_options)
    end
merge order is = defaults, template, custom