Revision history for Data-PubSub-Shared

0.01  2026-04-09
    - Initial release
    - Int variant: lock-free MPMC publish (atomic fetch-and-add)
    - Str variant: mutex-protected publish, variable-length circular arena
    - Lock-free subscribers for both variants (seqlock-style)
    - Batch operations: publish_multi, drain, poll_wait_multi, poll_cb
    - Per-subscriber overflow counting
    - Futex-based blocking poll with timeout
    - PID-based stale lock recovery (Str mode)
    - eventfd integration for event-loop subscribers
    - File-backed, anonymous, and memfd-backed modes
    - Optional keyword API via XS::Parse::Keyword
