This release includes a few new features to make DeepEcho work on more types of datasets
as well as to making it easier to add new datasets to the benchmarking framework.
* Add `segment_size` and `sequence_index` arguments to `fit` method.
* Add `sequence_length` as an optional argument to `sample` and `sample_sequence` methods.
* Update the Dataset storage format to add `sequence_index` and versioning.
* Separate the sequence assembling process in its own `deepecho.sequences` module.
* Add function `make_dataset` to create a dataset from a dataframe and just a few column names.
* Add notebook tutorial to show how to create a datasets and use them.