make active octave button pressed when tracker starts
tweak focus settings a bit
Merge pull request #286 from cyberixae/fix_octave_selector

make active octave button pressed when tracker starts
Merge pull request #287 from cyberixae/fix_focus

tweak focus settings a bit
implement notation select
Merge pull request #288 from cyberixae/implement_note_naming_selecting

implement notation select