Statsmodels 0.15 after work: Diebold–Mariano, Pesaran–Timmermann, Hamilton filter
Statsmodels 0.15.0 (27 Aug 2026) adds Diebold–Mariano, Pesaran–Timmermann, the Hamilton filter, NamedTuple results, rng= (SPEC-007), and optional Polars input converted to pandas at entry. After-work upgrade checklist plus a mini forecast-eval notebook. Not investment advice.