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#
# JUSTIN v0.10
# Just Use Sound To Improve Now (Justinguitar)
#
#  Changes since 0.9:
#   - Chord Recognition: added difficulty level for Justinguitar stage 4
#
#  Changes since 0.8:
#   - added different difficulty levels for single tone recognition
#
#  Changes since 0.7.1:
#   - added different difficulty levels for single interval recognition
#   - improved feedback after wrong answer in single interval recognition
#
#  Changes since 0.7:
#   - improved single tone library
#   - added return to main menu after completion
#
#  Changes since 0.6:
#   - implemented Single Tone Recognition
#
#  Changes since 0.5:
#   - added piano tones for Single Interval Recognition
#
#  Changes since 0.4:
#   - implemented Chord Progression Recognition
#
#  Changes since 0.3.1:
#   - implemented Single Interval Recognition
#
#  Changes since 0.3:
#   - added two training sets for Single Chord Recognition:
#       [A, D, E] corresponds to Justinguitar stage 1
#       [C, A, Am, D, Dm, E, Em, G] corresponds to Justinguitar stage 3
#
#  Changes since 0.2:
#   - added Linux compatibility
#   - added Single Interval Recognition
#
#  Changes since 0.1:
#   - choice of training set: old training set is set 1,
#       set 2 contains C, Cm, D, Dm, E, Em, F, Fm, G, Gm, B, Bm
#   - fixed crash after invalid input during training length query
#
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