Speedup 01 Quicker grouping of templates

[flixha]

What does this PR do?

Gives 50x speed up for grouping templates.

Why was it initiated? Any relevant Issues?

Grouping many templates was slow because the function was using a double loop for template-parameter comparison (O^2). So grouping took ~20 s for ~2000 templates. Sped up single loop to <0.5 s.

The new, quick function now circumvents the repeated calls to template.same_processing that contribute to the slowdown. So if we change what template.same_processing does (i.e., which dict-entries it compares), then we'd also need to change it here. Left in the old function for testing for now.

This PR contributes to the summary issue in #522

PR Checklist

• develop base branch selected?
• This PR is not directly related to an existing issue (which has no PR yet).
• All tests still pass.
  - [ ] Any new features or fixed regressions are be covered via new tests.
  - [ ] Any new or changed features have are fully documented.
• Significant changes have been added to CHANGES.md.
  - [ ] First time contributors have added your name to CONTRIBUTORS.md.

[flixha]

NCEDC - FDSN not answering properly in tests..

[calum-chamberlain]

Looks great to me! thanks for this.

[calum-chamberlain]

This looks like the wrong test for this PR.

[flixha]

Ups.. thanks for removing!

[calum-chamberlain]

Looks good to me @flixha - point noted on the template.same_processing. How about we make a template._processing_parameters property and use that instead of the:

if key in ["name", "st", "prepick", "event", "template_info"]:
    continue
else:
    actually compare

if logic in template.same_processing? Then your processing_tuples could just access those defined params. Any changes to the params compared in template.same_processing would then have to be made to the property and hence to your func?

[flixha]

template._processing_parameters property and use that instead of the:

Very good suggestion. Now I defined the _processing_parameters as function / property for a Template, which helps to simplify the code at three places so that it's simpler to update any changes to what we consider processing parameters.

let me know if this is not as you were suggesting..

[calum-chamberlain]

Nice, that is what I was thinking, glad you agree. Looks like that should be simpler to maintain.