Remove chardet, pytest-pep8 from dependencies, update music21 and fix haydn_op20 loader - #706

Remove chardet, pytest-pep8 from dependencies, update music21 and fix haydn_op20 loader#706

magdalenafuentes merged 7 commits into

mir-dataset-loaders:mastermir-dataset-loaders/mirdata:masterfrom

yujin-kimmm:fix/test_download_utilsyujin-kimmm/mirdata:fix/test_download_utilsCopy head branch name to clipboard