Change usage of the pygame_gui module

Test some of the pygame_gui functionalities

Fix an issue regarding a first move which would set off a bomb

Change the part of code responsible for testing loading files

Add a temporary TODO list within the README.md file

Add check for window resizing ensuring it's not too small

Add project structure to README.md

Remove customtkinter

Update README.md

Update README.md

Update README.md

Start writing the project's documentation

Tinker with customtkinter module (I have hit a creative block)

Further button testing

Fix Button class's is_mouse_over() method and add one more button for testing purposes