Add UBM-GMM, ISV, and JFA algorithms

See merge request !294

Fix partition-size being ignored

See merge request !293

If dask-client is passed as a string we reverted to the default behavior

replace is_estimator_stateless with estimator_requires_fit

See merge request !292

The actual code meant to check if an estimator
requires fit or not while the function was named is_estimator_stateless.

PipelineSimple partitioning fixes

See merge request !290

Redefines the heuristic for computing the dask.bag partition sizes.

Fix circular imports

Closes #182

See merge request !289

Fixes #182

Fix of CSVDataset documentation

See merge request !288

Remove bob.core and bob.math

See merge request !287

Add more support for atnt database

See merge request !286

Drop bob.db.atnt and add atnt here

See merge request !285

[click] add --no-dask option to pipeline simple

Closes #180

See merge request !284