Revision history for Linux-Event

0.004  2026-02-14
  - First stable API release.
  - Split timer queue into Linux::Event::Scheduler (Loop delegates scheduling).
  - Add signalfd integration: $loop->signal(...) with strict 4-argument callback ABI.
  - Add eventfd-based wakeups: $loop->waker (user watches $waker->fh).
  - Add pidfd integration: $loop->pid(...) for process-exit notifications (one-shot, replacement semantics per PID).
  - Freeze dispatch order for I/O watchers: error, then read, then write.
  - Freeze callback ABIs per watcher type (I/O, timer, signal, pid).

0.003_001  2026-02-12
  - Development snapshot prior to 0.004 API freeze.
  - Timers (after/at), I/O watchers (replacement semantics) and dispatch order tests.

0.002_001  2026-02-10
  - Introduce Linux::Event::Watcher (mutable watcher handles).
  - IO API: watch(...) returns a watcher; masks are internal.
  - Watchers support data (avoid closure captures) and enable/disable toggles.
  - Simplify timer API to seconds: after($seconds) and at($seconds).

0.001_001  2026-02-09
  - First developer release of Linux::Event::Loop + Backend boundary.
  - Epoll backend via Linux::Epoll.
  - Deadline scheduler (ns) included.
