Adding Harmony and multiread

[euxhenh]

• Adding Harmony for barch normalization
• Adding functionality to read multiple anndatas and merge
• Adding option to filter by equality

[codecov]

Codecov Report

Attention: 44 lines in your changes are missing coverage. Please review.

Comparison is base (c3cba08) 83.08% compared to head (fba47e6) 81.84%.

❗ Current head fba47e6 differs from pull request most recent head 215e0c0. Consider uploading reports for the commit 215e0c0 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #108      +/-   ##
==========================================
- Coverage   83.08%   81.84%   -1.24%     
==========================================
  Files          31       31              
  Lines        2240     2303      +63     
==========================================
+ Hits         1861     1885      +24     
- Misses        379      418      +39     

Files	Coverage Δ
src/grinch/aliases.py	100.00% <100.00%> (ø)
src/grinch/utils/stats.py	76.87% <100.00%> (+0.14%)	⬆️
src/grinch/main.py	57.14% <0.00%> (-1.69%)	⬇️
src/grinch/utils/decorators.py	51.42% <0.00%> (-17.15%)	⬇️
src/grinch/processors/gsea.py	69.19% <0.00%> (-0.59%)	⬇️
src/grinch/normalizers.py	79.50% <77.27%> (-0.50%)	⬇️
src/grinch/cond_filter.py	88.14% <45.45%> (-3.86%)	⬇️
src/grinch/pipeline.py	59.83% <47.05%> (-9.30%)	⬇️

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