Esinet

* Support for LSTM, Fully-Connected and ConvDip models
* Most recent code basis which served for the LSTM bioRxiv preprint

* Changed API from functional to object-oriented
* New Tutorials
* Models can now train on either single time instances of EEG data or on temporal data (LSTM Model)
* Optimized simulation through more intelligent matrix multiplications
* Im am sorry if this update broke your code. If you experience issues please either follow the tutorials on the new API or revert back to an older version.

* Made tutorial notebook clearer and minor changes

* Changed dependencies to be more rigid

* Changed progress bar to juypter mode
* added option to have mixed gaussian and flat source shapes for higher simulation diversity

* minor changes