GLM v1.8.1

Diff since v1.8.0

Closed issues:

• easy printing of fstat (#400)
• prediction fails on custom vectors (#442)
• ftest and -0.0 (#461)
• r2 for GLM (#475)
• Link doesn't behave like an abstract type (#486)
• lrtest gives incorrect results (#490)
• Prediction with confidence intervals not yet implemented for weighted regression (#495)
• Int conversion in loglik_obs(::Binomial) (#503)

Merged pull requests:

• Implement nulldeviance and nullloglikelihood for GLMs (#479) (@nalimilan)
• Readability improvement (#482) (@mousum-github)
• Implementation of dropcollinear feature in GeneralizedLinearModel (#488) (@mousum-github)
• Docs: Swap dependent and independent (#497) (@BioTurboNick)
• ditch negative zero in ftest output (#501) (@palday)
• autocancel stale CI runs (#502) (@palday)
• safer int for binomial loglik (#504) (@palday)