beta 1.1 released! 🎉 🎉🎉

Changes:

• The guessed interval now shows up in all of its possible positions on the fretboard.
• Guitar tuner.
• The last session's configuration (input settings, intervals picked, questions, mode, etc) is now saved. The application will load it when begginning a new session.
• Buttons to stop the session at any time and to repeat the last played question.
• Various bugfixes.