-- pg_tre 1.5.7 -> 1.5.8 upgrade.
--
-- 1.5.8 has no SQL-catalog changes.  It refreshes the vendored
-- sparsemap C library to 3.0.1 (a wire-compatible update: the
-- serialized bitmap format is byte-identical to prior releases)
-- and corrects the compiled-in PG_TRE_VERSION_STRING that had
-- drifted to "1.5.6".
--
-- The on-disk index format version is unchanged
-- (PG_TRE_FORMAT_VERSION_LATEST = 5), so existing indexes built
-- by 1.3.0 .. 1.5.7 remain readable as-is.  This upgrade is
-- online and requires NO REINDEX:
--
--     ALTER EXTENSION pg_tre UPDATE TO '1.5.8';
--
-- after installing the new shared library.  Intentionally empty.