Had to refactor the GameDB to use a list of levels instead of a vector of levels. If you get a _reference_ to an element of a vector, and then resize the vector, you'll get a crash if the realoc moves the data buffer. Using a list is actually what we want.

boss/fight.hpp

@@ -28,7 +28,7 @@ namespace boss {
     boss::UI $ui;
     sf::Vector2f mouse_pos{0,0};
     Entity $host = NONE;
-    components::Combat& $host_combat;
+    components::Combat* $host_combat = nullptr;
 
     Fight(shared_ptr<World> world, Entity boss_id, Entity player_id);