1.5

CHANGES:

New features:

• Windows paths support (@avsm @kentookura @talex5 @dra27 #913 #916).
  Previously, an Eio.Path.t always used POSIX-style paths, using / as the separator,
  but this didn't work well on Windows, especially with absolute paths.

• Pre-connect socket options (@avsm @art-w @talex5 #875).
  Eio.Net.connect now has ?bind_to and ?options arguments for pre-connect configuration.
  Allows an outbound socket to be configured before connect or listen.

• Add Eio.Path.of_dir (@talex5 #919).
  Just a convenience function.

Bug fixes:

• Fix handling of empty paths when using fs unconfined (@talex5 #907, reported by @samoht, reviewed by @avsm).

  Some path operations could end up using a path of "" which resulted in an error.
  This was breaking Path.mkdirs if only the base directory already existed.

Code cleanups and performance:

• eio_posix: fix build on 32-bit platforms (@talex5 #917, reported by @glondu).

• unix: optimise the POSIX path split to allocate much less by scanning (@avsm #915, reviewed by @talex5).

• eio_linux: use a bigger stack buffer for getdents to speed up bigger dirs (@avsm #910).

• Add some more tests for POSIX paths (@avsm @talex5 #918).

• Add "available" to opam files (@talex5 #921).

• Clean up dir_path handling (@talex5 @avsm #920).