[ENH] Add conditional mutual information test

[adam2392]

Signed-off-by: Adam Li adam2392@gmail.com

First part of #17

Changes proposed in this pull request:

• Adds the kNN based CMI test for conditional independence and related unit test

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[codecov-commenter]

Codecov Report

Merging #83 (5146004) into main (e305897) will increase coverage by 3.64%.
The diff coverage is 94.81%.

❗ Current head 5146004 differs from pull request most recent head 452d2ac. Consider uploading reports for the commit 452d2ac to get more accurate results

@@            Coverage Diff             @@
##             main      #83      +/-   ##
==========================================
+ Coverage   79.70%   83.35%   +3.64%     
==========================================
  Files          24       24              
  Lines        1493     1562      +69     
  Branches      246      259      +13     
==========================================
+ Hits         1190     1302     +112     
+ Misses        215      168      -47     
- Partials       88       92       +4     

Impacted Files	Coverage Δ
dodiscover/ci/utils.py	78.12% <86.66%> (+14.63%)	⬆️
dodiscover/ci/cmi_test.py	95.83% <95.83%> (ø)
dodiscover/cd/bregman.py

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[robertness]

LGTM. Perhaps we should edit the design goals in the README to mention a suite of conditional independence tests that are far more robust than in most libraries.

[adam2392]

@robertness can you approve this again, so this can be merged? Take a look at the new unit test file and this now works properly with and without a conditioning set. There was a bug before that broke the test when it was just non-conditional independence testing.

[robertness]

LGTM