Mlens

- Pandas compatibility
- Ensembles for time series
- Softer parameter checks
- Bug fixes

- Param change check errors fixed
- Param change raise warning
- Minor bug fixes
- Copyright

Introducing the computational graph backend. Version 0.2.0 implements the Learner-Transformer API, which generalizes the backend and expands the low-level API.

Version 0.2.1. includes critical a patch for model selection.

- Bug fixes
- Print messages during estimation
- Clear cache

- Fixed model selection random draw argument bug