Jim Huang

Cc. @JulianATA

> The 19.07 of legato AF is recommended for WP77xx by Sierra Wireless. It is better to downgrade the version when build the endpoint target for WP77xx. Show me the...

> For the WP77xx platform, it based onto the [19.07 version of Legato AF](https://source.sierrawireless.com/resources/airprime/software/wp77xx/wp77xx-firmware-latest-release/). > But for the Fx30(with WP7607-7), it based onto the [18.06.3 version of Legato AF](https://source.sierrawireless.com/resources/airlink/software_downloads/fx30-firmware/fx30-firmware-cat1/). Confirm...

Upon the above information, we only consider the versions after `18.06`. However, we have to confirm the compatibility for further versions. Documentation is required.

At first glance, I found the following implementations: * [Pittacus](https://github.com/vulkancurrency/pittacus): Its main goal is a data dissemination rather than membership management. * Allows to build a fully decentralized P2P cluster...

The repository [unix-v1](https://github.com/jserv/unix-v1) did some slight modifications to allow the builds on both Linux and macOS.

Thank @Rsysz for contributing!

I defer to @RinHizakura .

Again, use `git rebase -i` to rework the commits. Minimize the changes and ensure fully corresponding to conformance tests as the subject claimed.

Remove compressed instruction related commits in this pull request.