Notes sight reading trainer

Notes sight reading trainerImplemented features: - notes sequence generation (1 and 2 voices) - notes sequence display
Features in development: - played notes checking
OpenSource: https://github.com/andrei-kuznetsov/notes-sight-reading-trainerSome icons made by Freepik from www.flaticon.com is licensed by CC 3.0 BYSome icons made by Madebyoliver from www.flaticon.com is licensed by CC 3.0 BY