Add `weights` argument to `gr()`, for #1719#1727

Open

bschneidr wants to merge 5 commits intopaul-buerkner:masterfrom bschneidr:group-weights

+248-10

Commits on Jan 20, 2025

Add weights argument to gr(), for paul-buerkner#1719 , along
bschneidr
committed

Commits on Jan 29, 2025

Throw informative errors or warning for bad group-level weights. Add corresponding tests.
bschneidr
committed

Commits on Jan 30, 2025

Refactoring suggested in code review and to catch potential issue when .stan_re() uses mm() and not gr().
bschneidr
committed
In newdata, fill in group-level weights if not supplied
bschneidr
committed

Commits on Jan 31, 2025

Replace gr_weights with weights whenever unambiguous. Replace ifelse() function with if else control flow.
bschneidr
committed