Added math module back into pre-commit. Renamed classes following capitalization conventions.

[SamuelBorden]

@gipert I've added the math module back into the pre-commit. I changed some variable names to all lowercase, and then changed all math distribution class names to uppercase. I fixed the imports related to this in math and pargen and fixed some docstrings that weren't compiling in pargen. Tests in math and pargen are still passing for me locally.

[codecov]

Codecov Report

Attention: Patch coverage is 67.03297% with 210 lines in your changes are missing coverage. Please review.

Project coverage is 50.05%. Comparing base (9b2e556) to head (ebfbe4c).

Files	Patch %	Lines
src/pygama/math/histogram.py	59.13%	47 Missing ⚠️
src/pygama/math/hpge_peak_fitting.py	66.23%	26 Missing ⚠️
src/pygama/math/functions/exgauss.py	52.63%	18 Missing ⚠️
src/pygama/math/functions/sum_dists.py	77.21%	18 Missing ⚠️
src/pygama/math/functions/gauss.py	39.28%	17 Missing ⚠️
src/pygama/math/functions/crystal_ball.py	57.14%	15 Missing ⚠️
src/pygama/math/functions/step.py	61.76%	13 Missing ⚠️
src/pygama/math/functions/exponential.py	66.66%	8 Missing ⚠️
src/pygama/math/functions/hpge_peak.py	55.55%	8 Missing ⚠️
src/pygama/math/functions/poisson.py	53.33%	7 Missing ⚠️
... and 7 more

Additional details and impacted files

@@             Coverage Diff              @@
##           refactor     #576      +/-   ##
============================================
- Coverage     50.36%   50.05%   -0.31%     
============================================
  Files            63       63              
  Lines          7581     7581              
============================================
- Hits           3818     3795      -23     
- Misses         3763     3786      +23     

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[gipert]

lovely, thanks a lot sam!