Lwt 2.6.0

Additions

• Lwt_stream.closed and Lwt_stream.is_closed (#223, Spiros Eliopoulos).
• Lwt_switch.with_switch (#256, Thomas Leonard).
• Define 'a Lwt.result as ('a, exn) result (#247, Simon Cruanes).
• Lwt_condition.broadcast_exn (#241, Nicolas Ojeda Bar).
• Lwt_unix.utimes (#193).

Bugs fixed

• Memory leak in Lwt_unix.readdir_n (#229, diagnosed Thomas Leonard).
• Memory leak in Lwt.protected (#56, #181, reported @ygrek, Mauricio Fernandez).
• Lwt_switch.turn_off hook exception handling (995b704).
• Handling of ENOTCONN when channels passed to handler of Lwt_io.establish_server are closed (95fb431).
• Duplicate exceptions on implicit close in Lwt_io.with_connection (b1afe45).
• Deadlock in Lwt_main.at_exit (#48, #114, reported Jérôme Vouillon, Vincent Bernardoff).
• Performance of Lwt_preemptive.detach (#218, #219, Mauricio Fernandez).
• Bad hash functions for libev loops (#146, reported Mark Christiaens).
• Hash of uninitialized data in Lwt_io (#217, reported Jeremy Yallop).
• Update log sections after Lwt_log.load_rules (#188, reported @rand00).
• Print three digits for milliseconds in Lwt_log (#264, Fabian Hemmer).
• Do not truncate Unix job notification ids in C (#277, diagnosed @stijn-devriendt).

Deprecations

• Lwt_stream.on_termination: bind on Lwt_stream.closed instead.
• Lwt.make_value, Lwt.make_error: use result's Ok and Error constructors.
• Lwt_pqueue, Lwt_sequence: use min-heaps and linked lists from another library (#135).
• Pa_lwt, Pa_lwt_log: use Ppx_lwt.

Miscellaneous

• Update examples to use PPX syntax instead of Camlp4 (#108, Peter Zotov).
• Set up Travis, AppVeyor for testing on Linux, OS X, Cygwin, and MinGW. MSVC also planned.
• Large amount of local documentation fixes (including by Hezekiah Carty, Etienne Millon, Leo Wzukw, Sebastien Mondet).
• A bunch of new tests.