Tempocnn

- Require h5py<3.0.0, to avoid model loading issues.

- Moved to TensorFlow 1.15.4.
- Consolidated version info.
- Consolidated requirements.
- Switched to pytest.
- Officially support Python 3.7.
- Enabled GitHub actions for packaging and testing.
- Added Pypi workflow.
- Cache models locally.
- Load models from GitHub.
- Turned off TensorFlow debug logging.
- Migrated scripts to entry points.
- Removed charset encoding comments.

- Added support for DeepTemp, DeepSquare, and ShallowTemp models.
- Added support for Mazurka models.
- Added support for exporting data from tempograms.
- Added support for framewise normalization in tempograms.
- Moved to TensorFlow 1.15.2.
- Print number of model parameters.

- Added flag ``--interpolate`` for ``tempo`` to increase accuracy.
- Migrated models to TensorFlow 1.10.1.

- Added ``-d`` option for improved batch processing (tempo)
- Improved jams output
- Moved to librosa 0.6.2
- Continue processing batch, even when encountering an error

- Initial version