[boost] LEAF has been refactored, it now has a much simplified error handling interface

Subject: [boost] LEAF has been refactored, it now has a much simplified error handling interface
From: Emil Dotchevski (emildotchevski_at_[hidden])
Date: 2019-01-16 19:50:50

LEAF is a C++11 error handling library for use in low-latency environments.

I'm looking for a Boost Review Manager. Any one of you good people willing
to volunteer? :)

https://zajo.github.io/leaf/

Features:

-Header-only, no dependencies.

- No dynamic memory allocations.

- Any error-related object of any movable type is efficiently delivered to
the correct error handler.

- Compatible with std::error_code, errno and any other error code type.

- Support for multi-thread programming.

- Can be used with or without exception handling.