Add faster Weibull

[aloctavodia]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 72.50000% with 33 lines in your changes are missing coverage. Please review.

Project coverage is 82.78%. Comparing base (2c2d27c) to head (60eff08).

Files	Patch %	Lines
preliz/internal/special.py	16.12%	26 Missing ⚠️
preliz/distributions/weibull.py	91.25%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #353      +/-   ##
==========================================
- Coverage   83.19%   82.78%   -0.42%     
==========================================
  Files          49       50       +1     
  Lines        4934     5006      +72     
==========================================
+ Hits         4105     4144      +39     
- Misses        829      862      +33     

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