Mcfly

- Requirements change (keras<2.3.0)

- Fixed Zenodo configuration

- Requirements change (six>=1.10.0)
- Fixed Zenodo configuration

- Small bug fixes
- Added metric option to model training
- Extended documentation
- Removed redundant dependency on Pandas

- Small bug fixes
- Compatible with Keras v2.x (no longer compatible with Keras < v2.0.0)
- Tutorial is moved to separate repository (https://github.com/NLeSC/mcfly-tutorial)

First major release.