annotated print_upcoming function

src/list_handling.c

@@ -46,6 +46,8 @@ void free_list(struct event *head)
     }
 }
 
+// print_upcoming() also prints ongoing events
+// because you usually also want to see those
 void print_upcoming(struct event *head, char current_date[], int show_all_events) {
 	int i = 0;
 	while (head != NULL) {