Revision history for PostgreSQL extension envvar.

1.0.1   2025-04-29T18:27:29Z
      - Removed the `$libdir/` prefix from the `module_pathname` directive,
        so that the module can be installed and found in any directory listed
        in `dynamic_library_path`.
      - Supports PostgreSQL 9.1–18.
      - The version of the extension itself remains 1.0.0.
      - Added notes on using `make install prefix=` and the
        `extension_control_path` and `dynamic_library_path` GUCs on PostgreSQL
        18.

1.0.0   2024-06-05T17:33:05Z
      - Initial version.