This release introduces two handy features, please take a look
on http://mailman.nginx.org/pipermail/unit/2020-April/000199.html
for details.
<ChangeLog>
*) Feature: a "return" action with optional "location" for immediate
responses and external redirection.
*) Feature: fractional weights support for upstream servers.
*) Bugfix: accidental 502 "Bad Gateway" errors might have occurred in
applications under high load.
*) Bugfix: memory leak in the router; the bug had appeared in 1.13.0.
*) Bugfix: segmentation fault might have occurred in the router process
when reaching open connections limit.
*) Bugfix: "close() failed (9: Bad file descriptor)" alerts might have
appeared in the log while processing large request bodies; the bug
had appeared in 1.16.0.
*) Bugfix: existing application processes didn't reopen the log file.
*) Bugfix: incompatibility with some Node.js applications.
*) Bugfix: broken build on DragonFly BSD; the bug had appeared in
1.16.0.
</ChangeLog>
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