v1.3.0

Changes:

• Again use squares instead of images (because images must exist even later in .exe output)
• Add objects.py (delete snake.py & bait.py)
• Use Config table in database instead of Color
• root.after() instead of while-loop
• Separate frames from dialogs
• Login frame at first
• Code improvements

Minor Changes:

• Save is_default for each user in database
• Users can play without pausing the game
• Fix setting direction to an opposite one (pressing rapidly)
• Write model.hash()