- update to 4.2.0:
  * Add support for byte-based paths in connect_unix,
    create_unix_listeners, create_unix_datagram_socket, and
    create_connected_unix_datagram_socket. (PR by Lura Skye)
  * Enabled the Event and CapacityLimiter classes to be
    instantiated outside an event loop thread
  * Broadly improved/fixed the type annotations. Among other
    things, many functions and methods that take variadic
    positional arguments now make use of PEP 646 TypeVarTuple to
    allow the positional arguments to be validated by static type
    checkers. These changes affected numerous methods and
    functions, including: * anyio.run() * TaskGroup.start_soon()
    * anyio.from_thread.run() * anyio.from_thread.run_sync() *
    anyio.to_thread.run_sync() * anyio.to_process.run_sync() *
    BlockingPortal.call() * BlockingPortal.start_task_soon() *
    BlockingPortal.start_task() (also resolves #560)
  * Fixed various type annotations of anyio.Path to match
    Typeshed: * anyio.Path.__lt__() * anyio.Path.__le__() *
    anyio.Path.__gt__() * anyio.Path.__ge__() *
    anyio.Path.__truediv__() * anyio.Path.__rtruediv__() *
    anyio.Path.hardlink_to() * anyio.Path.samefile() *
    anyio.Path.symlink_to() * anyio.Path.with_segments() (PR by
    Ganden Schaffner)
  * Fixed adjusting the total number of tokens in a
    CapacityLimiter on asyncio failing to wake up tasks waiting
    to acquire the limiter in certain edge cases (fixed with help
    from Egor Blagov)
  * Fixed loop_factory and use_uvloop options not being used on
    the asyncio backend
  * Fixed cancellation propagating on asyncio from a task group

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