This Version update will provide a fit_predict method

[momonga-ml]

Summary

Add predict method based on the combine method for ensemble.
When ensemble is selected, Denseclus does not combine the umaps, instead it fits clusterer for each UMAP.
When predict is called it used approximate_predict in HDSCAN to then vote on the cluster assignment.

Other changes

• Change default method from 'contrast' to 'intersection'
• Change default distance metric for categoricals to jaccard for later rapids integration
• Increase overall test coverage
• prediction_data=False for combined UMAPs, True for ensemble
• Update examples to reflect changes

See: #4 and #33