🌟 Implemented hangman game logic.
- The user can get ten trials until game over.
- The user can see the length of correct letters during the game.
- The letter is revealed one by one if the user did correct guess.
- The hangman image is revealed step by step if the user did wrong guess.
- The user wins if all the letters were successfully guessed before the ten trials has been done, otherwise, he/she loses.

🌟 Built simple, user friendly interface.

🌟 Implemented letter filtering function which allows the user to play only with A-Z, Ä, Ö or Å.

🌟 Built keyboard that the user can press each only once.