Revision history for Data-DisjointSet-Shared

0.03      2026-07-22
          - Fix a use-after-free in union_many(): a tied array, or overloaded
            or tied elements, run Perl that can destroy the set, after which
            the already-captured handle was still used. Such a call now
            croaks.
          - On-disk format change (v1 -> v2): an existing 0.02 file is
            refused; recreate it.
          - Validate the element count from one snapshot at attach.
          - Resolve argument magic before capturing the path string.

0.02      2026-07-03
          - Security and robustness hardening; backing files now created mode
            0600 (pass a file-mode argument to new() for cross-user sharing).

0.01      2026-06-26
          - Initial release.