Please add hyperluminal-mem

[cosmos72]

Hyperluminal-mem is a high-performance (de)serialization library
https://github.com/cosmos72/hyperluminal-mem

Its main goals are:

1. safety - can deserialize untrusted data, for example received from the network
2. portability - serialized format does not depend on Lisp implementation, users can choose between 32 and 64 bit formats and (soon) between little and big endian
3. speed - can exceed 1GB/s on recent x86-64 running SBCL
4. ease of use - supports all Common Lisp builtin types, and adding support for user-defined types is usually straightforward