Fix import order

squirrelbattle/bootstrap.py

@@ -1,9 +1,9 @@
 # Copyright (C) 2020-2021 by ÿnérant, eichhornchen, nicomarg, charlse
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from squirrelbattle.game import Game
-from squirrelbattle.display.display_manager import DisplayManager
-from squirrelbattle.term_manager import TermManager
+from .display.display_manager import DisplayManager
+from .game import Game
+from .term_manager import TermManager
 
 
 class Bootstrap: