[m-rev.] for review: Add closeable channels to the standard library.

[Peter Wang]

On Mon, 17 Feb 2020 17:00:18 +1100 (AEDT), Julien Fischer <jfischer at opturion.com> wrote:
> 
> Hi Peter,
> 
> On Mon, 17 Feb 2020, Peter Wang wrote:
> 
> > library/thread.closeable_channel.m
> >    Add the new module. It omits two operations from thread.channel.m:
> >    - untake, because it is deprecated
> >    - duplicate, because I'm not sure what it's useful for in practice
> >
> > library/MODULES_DOC:
> > library/library.m
> > library/thread.m:
> > NEWS:
> >    Mention the new module.
> 
> That's fine; can you please also extend the test suite with a test
> that exercises the basic functionality of the new module.

Done. Thanks.

Peter