a bit of numba to be faster in numpy

[Ipuch]

a bit of numba to be faster in numpy

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This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 83.67%. Comparing base (dd0cb46) to head (a7cba88).
Report is 1 commits behind head on main.

Files	Patch %	Lines
bionc/bionc_numpy/rotations.py	65.38%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #140      +/-   ##
==========================================
- Coverage   83.80%   83.67%   -0.13%     
==========================================
  Files          93       93              
  Lines        5976     5984       +8     
==========================================
- Hits         5008     5007       -1     
- Misses        968      977       +9     

Flag	Coverage Δ
unittests	83.67% <66.66%> (-0.13%)	⬇️

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[Ipuch]

Weird because when using codecov function are now considered as not covered