IntensityExtractor bug fix and refactoring.
AuToBI v.1.5 release

The major change to this release is a licence change.  Prior to this release AuToBI was covered by GPL v.3.  From this release onward, AuToBI is released under the Apache 2.0 license.

The impact of this is in the dependencies on libraries and algorithms that were covered by GPL and originally incorporated into AuToBI.  These include the Praat pitch and intensity extraction algorithms, and weka classifiers.  The pitch and intensity extraction algorithms have been swapped out, using the RAPT pitch tracker and a RMSE based intensity calculation.  Weka classifiers have been replaced by Liblinear.  The performance is slightly lower in some cases. I am confidence that parameter tuning can recover much of this, but this is a pending task.

Support has also been included for the Rhapsodie corpus.

A few bugs have also been fixed -- including a fairly embarrassing bug in AuToBI.java where the version 1.4 feature registry was incorrectly initialized.  (Apparently I had only tested AuToBITrainTest under the new configuration.)