GLM v1.9.0

Diff since v1.8.2

Merged pull requests:

• QR decomposition method in GLM. (#507) (@mousum-github)
• Bump actions/cache from 1 to 3 (#524) (@dependabot[bot])
• Bump codecov/codecov-action from 1 to 3 (#525) (@dependabot[bot])
• Bump actions/checkout from 2 to 3 (#526) (@dependabot[bot])
• bump compat for StatsBase 0.34 (#529) (@palday)
• Set minimum Julia version to 1.6 (#514) (#530) (@palday)
• CompatHelper: bump compat for StatsModels to 0.7, (keep existing compat) (#532) (@github-actions[bot])
• CompatHelper: bump compat for StatsBase to 0.34, (keep existing compat) (#533) (@github-actions[bot])
• Remove installbeta! and make linear model fit insensitive to beta0 state (#535) (@andreasnoack)
• set version to 2.0.0-DEV (#536) (@palday)
• [v1] Allow documentation building on push (#542) (@ararslan)
• Bump actions/checkout from 3 to 4 (#547) (@dependabot[bot])
• [G]VIF (#548) (@palday)
• backport VIF to 1.x release (#549) (@palday)

Closed issues:

• Add VIF? (#428)
• Feature request: Support ForwardDiff automatic differentiation (#493)
• Feature request: Support non-integer dependent variable for Poisson regression (#494)
• I propose to consider adding precompilation to GLM.jl (#513)
• Feature request: Support for reuse of pinv computation for multiple Y values in linear models (#534)
• infinite uninterruptible hang on one illegal input to ftest (#538)
• Feature Request: Better formats for the GLM outputs (#543)