Try all possible shorthands when constructing chord from notes. Better
comparison with triads.
Multithreaded discrete cosine transform
Code cleanup
Comparison rewritten to use Mirex2010 metric from Pauwels, Peeters 2013
Minor updates
Generate everything in TrainTestDataCiruclarGenerator
Package name update in import
Do median smoothing and shrink in one method.
Test updates. This version of code was used to prepare RuSSIR 2013
submission.