Revision history for Data-Buffer-Shared

0.01  2026-04-05
    - Initial release
    - 11 type variants: I8/U8/I16/U16/I32/U32/I64/U64/F32/F64/Str
    - File-backed, anonymous, and memfd constructors
    - Lock-free atomic get/set for numeric types
    - Atomic counters: incr/decr/add/cas/cmpxchg
    - Atomic bitwise: and/or/xor
    - Seqlock-guarded bulk: slice/set_slice/get_raw/set_raw/fill/clear
    - Batch atomic add_slice
    - Zero-copy as_scalar (mmap-aliased scalar ref)
    - Raw pointer access: ptr/ptr_at
    - Explicit locking: lock_wr/unlock_wr/lock_rd/unlock_rd
    - fd passing: new_memfd/new_from_fd/fd
    - eventfd notifications: create_eventfd/attach_eventfd/notify/wait_notify
    - Futex-based rwlock with stale-lock recovery
    - Keyword API via XS::Parse::Keyword
