[WIP] Soiling reformat

[martin-springer]

• Code changes are covered by tests
• Code changes have been evaluated for compatibility/integration with TrendAnalysis
• New functions added to __init__.py
• API.rst is up to date, along with other sphinx docs pages
• Example notebooks are rerun and differences in results scrutinized
• Updated changelog

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.79%. Comparing base (b5eb6e2) to head (5a98b10).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #516   +/-   ##
=======================================
  Coverage   96.79%   96.79%           
=======================================
  Files          12       12           
  Lines        2342     2342           
=======================================
  Hits         2267     2267           
  Misses         75       75           

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