- Copying LocalManualEvent now works correctly, using reference counting
- ManualEvent correctly pins the reference to the thread-local waiter until it has finished emitting it
- ThreadLocalWaiter uses a doubly-linked list to manage task waiters (more efficient deletion, FIFO trigger order)
- Fixed a bug in ThreadLocalWaiter.emit() where the head element of the iterated list might already have stopped waiting, resulting in an invocation of a dangling TaskWaiter pointer
a4b36f08d3