Please add cl-zyre and ratmath

[jesseoff]

I've written 2 new Lisp packages I'd like to request quicklisp inclusion of:

1. https://github.com/jesseoff/cl-zyre - "Lisp binding for the Zyre service discovery and network messaging library"
2. https://github.com/jesseoff/ratmath - "Utilities for rational approximations and interval arithmetic"

[quicklisp]

Failure log here: http://report.quicklisp.org/2020-01-24/failure-report/cl-zyre.html

[phoe]

Seems like a foreign library must be built from source for this to work.

https://github.com/zeromq/zyre#building-on-linux

[jesseoff]

There is a prebuilt package for Zyre for macOS on home-brew:

brew install zyre

I'm not sure why the Linux distro's haven't picked this project up yet.

[jesseoff]

I've pushed some changes to git that fix the missing :author in the .asd and also should quiet a couple warnings, but nothing can change the need for the C library.