fix: sync upstream + revive AdaBoost & ResidualChain (Object=M pattern, closes #3)#4

Merged

jagan-nuvai merged 9 commits intomasterfrom

chore/sync-upstream-2026-05-01

May 1, 2026

Commits on Feb 3, 2026

Commits on Feb 4, 2026

Relax required test score
relf
committed

Commits on Mar 9, 2026

Add generic `ResidualChain` composing method (#430)
Feiyang472
authored

Commits on Mar 18, 2026

Fixes #393. label ordering in binary logistic regression,(#432)
espenloov
authored
fix: realign PreprocessingError variants with error strings (#434)
oglego
authored

Commits on Apr 16, 2026

feat: add symmetric mean absolute percentage error (sMAPE) (#437)

oglego
and
relf
authored

Commits on May 1, 2026