Subscriber History

#Subscriber History #####create_history( $subscriber_id, $notes )

argument	required?	datatype
subscriber_id	yes	int
notes	yes	string
Returns history_id (int) or false.
#####get_subscriber_history( $subscriber_id )
argument	required?	datatype
----------	-----------	----------
subscriber_id	yes	int
Returns false or array of history arrays.
#####update_history( $history_id, $notes )
argument	required?	datatype
----------	-----------	----------
history_id	yes	int
notes	yes	string
Returns true or false.
#####delete_history( $history_id )
argument	required?	datatype
----------	-----------	----------
history_id	yes	int
Returns true or false.