Changes in version 1.0.4 (2026-09-17)                  

  - bsts and BoomSpikeSlab are now suggested rather than imported,
    following CRAN's request regarding the archival of Boom.
    bsts_model() requires both packages and stops with an informative
    message when they are not installed.
  - Improved the estimates for the ecm_mars() and bsts_model() models.