Update UI Files

- Removed unused UI files
- Removed unused UI files' compiled files
- Simplify Ui_text_display
- Add (updated) copyright notices
Revise and Regularize Copyright Messages for All Files

Except the UI files, which were done in the previous commit.
Removed Copy of Ui_text_display.py

So the DisplayHandler now properly uses the copy in the views module.
Allow Multiprocessing with MIDI Files in Importer

- Allow multiprocessing and pickling MIDI files in Importer
- Updated importer's automated tests
Allow Multiprocessing with MIDI Files in Analyzer

- Allow multiprocessing/pickiling with MIDI files in Analyzer
Adjust Indentation of test_importer.py
Raise Exception if Experiment Produced no Results

For the StatisticsListDisplay and GraphDisplay, if the Experiment didn't
produce any results, they'll tell the DisplayHandler about the problem,
rather than just failing.
Preliminary Work on a Chord-Finding-in-Piano-Texture Algorithm

It actually works a little bit!
Print + or - for Quality in Chord n-gram Output
Further Preliminary Work on Chord-Find-in-Piano-Texture Algorithm
Correction to ChordNGram

Previously didn't have a test or the ability to find, a simple P transform.
Useful ChordParser!

It works!
Add "All Voices" (at Once) Checkbox for Part-Combination Selection

- change "all voice pairs" to "[all pairs]"
- tell Analyzer "[all]" means "all voices at once"
- Also many incidental formatting changes to views/main.py
Optimizations and Fixes in ChordsLists Experiment

- hopefully it's faster...
- now also shows root-and-quality-and-FB when possible
- shows bass-and-FB when there is no "quality" to speak of
Update Copyright Notice

I re-spaced it, and changed the version from vis9a to vis9c.
Add Shortcut to "Add Combination" Button
Better Error Handling during an Experiment

- They won't crash vis, but they will be reported to users!
- Also some minor changes to comments in experimenter.py
Hide "Cancel Operation" Button When Performing an Experiment
Improved Experiment Settings Selection in GUI

- Non-applicable options use setVisible() rather than setEnabled(), so it's
  more clear (especially on OS X) that they aren't possible choices.
- When changing output object, a valid output format is automatically
  selected.
Fix "All Voices" and "All Voice Pairs" Checkboxes

Now they behave exclusively, and cooperate properly with other part
selections.