Update 2023-02-13

The following changes were added:

• Update the labyrinth generator to make sure that there is never an open corridor between any initial spawn locations
• Actually include the labyrinth generator in the releases for Linux and Windows
• In "Credits" screen add a version indicator bottom right. Bottom left there is now a ":" if the labyrinth generator has been used successfully and "." if instead one of the 3000 pregenerated mazes has been randomly selected