-- pg_tre 1.0.0 -> 1.1.0 upgrade.
--
-- 1.1.0 is a same-on-disk-format release: the index AM, page layouts,
-- WAL records, and SQL surface are byte-identical to 1.0.0.  The
-- changes are all under the hood:
--
--   * vendored sparsemap 2.0.0 -> 2.2.0
--   * adopted sparsemap's allocator-friendly APIs (sm_open_copy,
--     sm_add_grow, sm_next_member)
--   * fixed the multi-leaf right-link sm_union reversed-logic bug
--     that silently dropped every leaf past the first
--
-- No re-index required.  Existing 1.0.0 indexes work as-is.
-- Nothing to do at the SQL level; the version bump is bookkeeping.