Fibers 1.2.0 released

[Aleix Conchillo Flaqué]

Hi,

On behalf of the Fibers team, I am excited to announce Fibers 1.2.0.

Fibers is a lightweight concurrency facility for Guile that supports
non-blocking
input and output, millions of concurrent threads, and Concurrent
ML-inspired communication primitives. For more information, see the web
version of the manual at:

  https://github.com/wingo/fibers/wiki/Manual

As a major change, this release introduces a new 'libevent' backend which
will allow to easily add Fibers support in different platforms. The first
supported platform is macOS. Thank you Abdulrahman Semrie for starting all
this work and to others who have provided great feedback (and patience!).
Apart from these exciting news this release also fixes multiple issues.

The 1.2.0 tarball can be found here:


https://github.com/wingo/fibers/releases/download/v1.2.0/fibers-1.2.0.tar.gz

Its SHA256 sum is:

  0aefb081767f6f49ecb5146dfe54663c42facf0783181e5bef0a6c8ca8d51043
 fibers-1.2.0.tar.gz

* Changes since 1.1.1

- Add support for 'libevent' backend. Currently only native 'epoll' is
supported. If 'epoll' is not detected we would default to 'libevent'. If
you have 'epoll' but want to try 'libevent' you can always do
'./configure --disable-epoll'.
- Do not re-add FD finalisers on FDs that already have one.
- Introduce 'pipe2' (for 'epoll') and mark wake pipe as O_CLOEXEC.
- Implement operations for waiting for readability / writability.
- Support streaming responses in Fibers' web server to allow for bigger
responses.
- Fix behaviour of 'epoll-wake!' after 'run-fibers'.

Happy Holidays and Happy Hacking!

Aleix