add support for selectively showing sequences (backend)

src/dev-util/savegame.gd

@@ -146,6 +146,8 @@ func _get_save_dict() -> Dictionary:
 		"unique_save_name": unique_save_name,
 		"current_room": current_room,
 		"mementos_complete": mementos_complete,
+		"sequences_enabled": sequences_enabled,
+		"childhood_mementos": childhood_mementos,
 		"board_state": board_state,
 		"is_childhood_board_complete": is_childhood_board_complete,
 		"last_saved": last_saved,

src/singletons/scene_reference.gd

@@ -3,6 +3,7 @@ extends Node
 var sequence_actors:Array[Array] = []
 var started_sequences: int = 0
 var completed_sequences: int = 0
+var enabled_sequences: int = 63
 var current_sequence: int = -1
 var current_sequence_index: int = 0