0.7 Added GNU GPL License and help on using Ear Trainer

0.7.3 Added ability to name the absolute notes played in the interval.
      Please relize that perfect pitch is something you either have or you 
      don't have.  If you can't name the absolute notes, don't kick yourself.

0.7.4 Started to add popups for Controls (not implemented yet).  Fixed
      long-standing bug that caused flickering of interval choices.

0.7.5 Volume control works now; now we need to set things up to save the
      volume

0.7.6 Volume setting is now saved between sessions

0.7.7 Code cleanup ; Confirmaiton is asked before playing new interval if the
      old one has not been guessed yet

0.7.8 Fixed bug where preferences were not correctly initialized on first
      execution of Ear Trainer ; added duration selection

0.8.0 Added Random option to Duration, added Direction option.  Fixed bug 
      where some preferences would have an invalid value after an upgrade.

0.8.1 Code cleanup.  Changed the name of the "Semitone" interval to the more
      commonly used "Half Step".  Added "Alert On" selection that can alert 
      on the right interval guessed, the wrong interval guessed, or both.

0.9.0 Added button that will play the currently guessed interval, using the 
      same base note.  This is helpful when you want to hear what your 
      incorrect guess really sounds like.

0.9.1 Added brief statement that this is GPL software in Help -> About.  
      Added non-alert that informs user of right interval guessed.

1.0.00 Made help screen a four-screen comprehensive help that describes
       all the features of the Ear Training software.

1.0.01 Corrected a single typo in the help menu.

