Add migrator

Attempts to fix incompatibilities in save files across builds. The idea is to try and handle the incompatibility as graceful as possible, and adding more "incompatibility fixes" in the future.

qt_ui/windows/QLiberationWindow.py

@@ -19,7 +19,7 @@ from PySide2.QtWidgets import (
 )
 
 import qt_ui.uiconstants as CONST
-from game import Game, VERSION, persistency
+from game import Game, VERSION, persistency, Migrator
 from game.debriefing import Debriefing
 from game.game import TurnState
 from game.layout import LAYOUTS
@@ -108,6 +108,7 @@ class QLiberationWindow(QMainWindow):
                 try:
                     logging.info("Loading last saved game : " + str(last_save_file))
                     game = persistency.load_game(last_save_file)
+                    Migrator(game)
                     self.onGameGenerated(game)
                     self.updateWindowTitle(last_save_file if game else None)
                 except:
@@ -317,6 +318,7 @@ class QLiberationWindow(QMainWindow):
         )
         if file is not None and file[0] != "":
             game = persistency.load_game(file[0])
+            Migrator(game)
             GameUpdateSignal.get_instance().game_loaded.emit(game)
 
             self.updateWindowTitle(file[0])