[ENH] ClaSP: Adds parallelization for distance computations and numbarize function calls

[patrickzib]

This is mostly a performance enhancement of the ClaSP implementation by:

• Parallelizing ClaSP distance computations
• Numbarizing methods.
• exposing n_jobs to ClaSP-Constructor class
• convert ClaSPTransformer to BaseSeriesTransformer

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[TonyBagnall]

maybe convert to a BaseSeriesTransformer at the same time (#1618)?

[patrickzib]

I was thinking about removing the Transformer all together and merge it into ClaSP Segmenter? :) Or should I convert it?

[patrickzib]

I was thinking about removing the Transformer all together and merge it into ClaSP Segmenter? :) Or should I convert it?

I meant merge the Transformer with the Segmenter, and remove the Transformer

[TonyBagnall]

I was thinking about removing the Transformer all together and merge it into ClaSP Segmenter? :) Or should I convert it?

I think remove the transformer and just merge it into a clasp segmenter is best way forward

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[patrickzib]

Thank you @MatthewMiddlehurst and @TonyBagnall

I set n_jobs to 1 and have converted the BaseTransformer to a BaseSeriesTransformer for now.

Felt like merging everything into one module is also not the best option for now. Might re-consider this in the future :)