code: function listsRequest( state = false, { type } ) {
  	switch ( type ) {
  		case WOOCOMMERCE_MAILCHIMP_LISTS_REQUEST:
  		case WOOCOMMERCE_MAILCHIMP_LISTS_REQUEST_SUCCESS:
  		case WOOCOMMERCE_MAILCHIMP_LISTS_REQUEST_FAILURE:
  			return WOOCOMMERCE_MAILCHIMP_LISTS_REQUEST === type;
  	}
  
  	return state;
  }
docs: Updates state with lists request status
  
  @param  {Object} state  Current state
  @param  {Object} action Action
  @return {Object}        Updated state