Songbird

Correcting matching between metadata and biom table and clarifying the min-feature-count parameter [99](https://github.com/biocore/songbird/pull/99)

Added Tensorboard's HParams functionality to standalone [95](https://github.com/biocore/songbird/pull/95)

Enable duplicate metadata ids [89](https://github.com/biocore/songbird/pull/89)

Added Q2 statistic explanation and documentation [87](https://github.com/biocore/songbird/pull/87)

Added compatibility with the new qiime2 differential type [60](https://github.com/biocore/songbird/pull/60)

Minor release bump. Differential types are now inherited from q2 types.

Minor release bump. qiime2 snares are resolved.

Initial alpha release. Multinomial regression API, standalone command line interface and qiime2 interface should be stable.