1.000 Dec 18 2022
	- whitespace is now stripped completely from map string
	- add get_class_of_object method to Game::TileMap objects
	- to_string_and_mark now uses exclamation mark by default (instead of at symbol)
	- module now supports multiple wall and void objects (as opposed to just one before)

0.002 Nov 21 2022
	- fix check_ routines checking tile contents, not the type

0.001 Nov 12 2022
	- first version