re-implement ephys.* and ms4alg.* processors using new processor manager

[magland]

Use a slightly different namespace, so we can test the equivalence, and then we'll replace the existing with the new.

These include the following:

ephys.bandpass_filter
ephys.compare_ground_truth
ephys.compute_cluster_metrics
ephys.compute_cross_correlograms
ephys.compute_templates
ephys.convert_array
ephys.synthesize_random_firings
ephys.synthesize_random_waveforms
ephys.synthesize_timeseries
ephys.whiten

ms4alg.apply_label_map
ms4alg.create_label_map
ms4alg.sort

[wysota]

Initial implementation of the aforementioned processors has been completed and is available in 'mlprocessors' branch of respective repositories. Once it is confirmed the ports work as expected, I'll work on improving the implementation.

[magland]

Excellent. Can we merge this into the master branch? Then I will change all my pipelines to use ephys_new.* And if everything seems okay for around a week, we will make the namespace change, and change ephys.* to ephys_old.* and ephys_new.* to ephys.. Then after another week or so we will then delete the ephys_old.

[wysota]

I'd feel safer if you tested it slightly first but if you feel confident about it then go ahead. Once I know it works, I'll fiddle with the implementation as currently everything is in a single file and wraps your original calls. I want to put implementations into dedicated files.

[magland]

Okay, I'll try to get to this soon.