Bayesian blocking gamma prior doesn't make sense

[Moelf]

when gamma is supplied,

hepstats/src/hepstats/modeling/bayesian_blocks.py

Line 51 in 4c5bdba

return -np.log(self.gamma)

hepstats/src/hepstats/modeling/bayesian_blocks.py

Line 154 in 4c5bdba

A_R = fit_vec - prior.calc(R + 1)

this is a constant prior, this doesn't make sense because the prior should depend on N_b (https://arxiv.org/pdf/1708.00810.pdf):