[REF] Changes model module -> metrics module

[jbteves]

Closes #277 .

Changes proposed in this pull request:

• Renames tedana.model to tedana.metrics

[codecov]

Codecov Report

Merging #325 into master will not change coverage.
The diff coverage is 68.42%.

@@          Coverage Diff           @@
##           master    #325   +/-   ##
======================================
  Coverage    49.2%   49.2%           
======================================
  Files          39      39           
  Lines        2140    2140           
======================================
  Hits         1053    1053           
  Misses       1087    1087

Impacted Files	Coverage Δ
tedana/metrics/kundu_fit.py	29.47% <ø> (ø)
tedana/tests/test_model_kundu_metrics.py	100% <100%> (ø)	⬆️
tedana/metrics/__init__.py	100% <100%> (ø)
tedana/tests/test_model_fit_dependence_metrics.py	100% <100%> (ø)	⬆️
tedana/workflows/tedana.py	12.43% <20%> (ø)	⬆️
tedana/decomposition/pca.py	16.66% <50%> (ø)	⬆️
tedana/viz.py	9.86% <50%> (ø)	⬆️

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[tsalo]

@jbteves @emdupre what do you think about renaming fit.py to something more in line with our plans for expansion? I was thinking maybe meica.py, because these metrics are specific to the ME-ICA pipeline.

[jbteves]

@tsalo I think maybe kundu_fit since that's what we're naming what I would consider "original pipeline" code. We already have kundu_selection, for example. This seems like a natural extension. Plus I think it might be confusing to call something meica if we're deprecating it...

[emdupre]

Agree that meica is likely to cause confusion, but I like the idea of renaming to make it clear that this was the original fitting method ! kundu_fit sounds just right to me 😸

[jbteves]

Okay, 4d13bc6 should fix that.