Add some docs explaining how to "analyze FS algorithm stability"

[dunnkers]

As per requested in the review: Add more documentation highlighting the 'essential' parts of the library.

I believe this to be a significant feature of the library, and hence will add explicit instructions for it. Working on the docs currnently.

[lgtm-com]

This pull request fixes 2 alerts when merging eb4f319 into 54c7232 - view on LGTM.com

fixed alerts:

• 2 for Unused import

[codecov-commenter]

Codecov Report

Merging #83 (3205082) into master (54c7232) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #83      +/-   ##
==========================================
- Coverage   98.15%   98.14%   -0.01%     
==========================================
  Files          81       81              
  Lines        2380     2378       -2     
==========================================
- Hits         2336     2334       -2     
  Misses         44       44              

Impacted Files	Coverage Δ
fseval/callbacks/to_sql.py	100.00% <100.00%> (ø)
fseval/pipelines/_experiment.py	98.14% <100.00%> (-0.02%)	⬇️
.../pipelines/rank_and_validate/_support_validator.py	89.47% <100.00%> (ø)
tests/integration/test_main.py	100.00% <100.00%> (ø)

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[lgtm-com]

This pull request fixes 2 alerts when merging 3205082 into 54c7232 - view on LGTM.com

fixed alerts:

• 2 for Unused import

[lgtm-com]

This pull request fixes 2 alerts when merging f2794be into 54c7232 - view on LGTM.com

fixed alerts:

• 2 for Unused import