0.14

CHANGES:

New features / API changes:

• Add Eio.Executor_pool (@SGrondin #639, reviewed by @talex5).
  Provides an easy way to distribute jobs across domains.

• Add Fiber.first ~combine and Fiber.n_any (@SGrondin @talex5 #587).
  Allows keeping both results in the case where multiple fibers succeed.

• Add Eio_mock.Backend.run_full with auto-advancing mock clock (@talex5 #644, reviewed by @SGrondin).
  Simplifies testing of code using clocks.

• Add Buf_write.printf (@SGrondin @talex5 #655).

• Add Net.listening_addr (@mefyl #555, reviewed by @patricoferris @talex5).
  Useful to get the socket's address if the OS assigns it.

• Add Promise.try_resolve (@talex5 #646).

• Remove Cancel_hook_failed exception (@talex5 #640).
  Didn't seem to be used and broke dscheck.

Tracing:

• Improve tracing (@TheLortex @patricoferris @talex5 #656).
  Trace cancellation contexts and OS operations, and simplify API.

• Add labels to switches (@talex5 #661, reviewed by @SGrondin).

• Fiber.all: use the parent fiber (@talex5 #665, reviewed by @SGrondin).
  Cleans up the traces a bit.

Performance:

• Faster and simpler Lf_queue (@talex5 #647, based on work by @polytypic).

• Optimise Flow.copy with Buf_read.as_flow (@talex5 #663, reviewed by @SGrondin, reported by @leostera).

Bug fixes:

• Fix handling of very long IO vectors (@talex5 #653, reported by @Cjen1).

• eio_posix: use caml_enter_blocking_section in more places (@talex5 #654, reviewed by @SGrondin).

• eio_posix: work around caml_unix_alloc_sockaddr bug (@talex5 #651).

• Remove default backtrace from Switch.fail (@talex5 #664).

Documentation:

• Organise eio.mli better (@talex5 #667).

• Fix quoting of quotes in process error messages (@talex5 #666, reviewed by @SGrondin).

• Mention Path module in File and Fs documentation (@talex5 #659, requested by @clecat).

• Minor documentation updates (@SGrondin @talex5 #670).

Build / internals:

• Allow closing synchronous streams (@talex5 #641, reviewed by @SGrondin).
  This isn't currently exposed in the public interface.

• Fix non-idempotent tests (@SGrondin #662).

• eio_windows: add explicit fmt dependency (@talex5 #643).