Changelog

tractor 0.1.0a1 (2021-08-01)

Updated our uni-directional streaming API (#206) to require a context manager style async with Portal.open_stream_from(target) as stream: which explicitly determines when to stop a stream in the calling (aka portal opening) actor much like async_generator.aclosing() enforcement.
Improved the multiprocessing backend sub-actor reaping (#208) during actor nursery exit, particularly during cancellation scenarios that previously might result in hard to debug hangs.
Added initial bi-directional streaming support in #219 with follow up debugger improvements via #220 using the new tractor.Context cross-actor task syncing system. The debugger upgrades add an edge triggered last-in-tty-lock semaphore which allows the root process for a tree to avoid clobbering children who have queued to acquire the pdb repl by waiting to cancel sub-actors until the lock is known to be released and has no pending waiters.

Initial optional msgspec serialization support in #214 which should hopefully land by next release.
Improved "infect asyncio" cross-loop task cancellation and error propagation by vastly simplifying the cross-loop-task streaming approach. We may end up just going with a use of anyio in the medium term to avoid re-doing work done by their cross-event-loop portals. See the infect_asyncio for details.

Updated our readme to include more (and better) examples (with matching multi-terminal process monitoring shell commands) as well as added many more examples to the repo set.
Added a readme "actors under the hood" section in an effort to guard against suggestions for changing the API away from trio's tasks-as-functions style.
Moved to using the sphinx book theme though it needs some heavy tweaking and doesn't seem to show our logo on rtd :(

Added a new TransportClosed internal exception/signal (#215 for catching TCP channel gentle closes instead of silently falling through the message handler loop via an async generator return.

Dropped support for invoking sync functions (#205) in other actors/processes since you can always wrap a sync function from an async one. Users can instead consider using trio-parallel which is a project specifically geared for purely synchronous calls in sub-processes.
Deprecated our tractor.run() entrypoint #197; the runtime is now either started implicitly in first actor nursery use or via an explicit call to tractor.open_root_actor(). Full removal of tractor.run() will come by beta release.