Quantizer counts sequences with multiple time signatures (#181)
Quantizer counts sequences with multiple time signatures (#181)

* Remove trailing whitespace in pipelines README

* Fix SequencesLibTest.testRounding

* Quantizer counts how many sequences have multiple time signatures.

Counter name:
DAGPipeline_Quantizer_sequences_discarded_because_multiple_time_signatures

jesseengel/magenta,YoshikawaMasashi/magenta,adarob/magenta,YoshikawaMasashi/magenta,magenta/magenta,YoshikawaMasashi/magenta,hanzorama/magenta,magenta/magenta,YoshikawaMasashi/magenta,jesseengel/magenta,hanzorama/magenta,adarob/magenta