As support for etcd features is very uneven between different clients,
a feature matrix can help application developers to understand what a
client library can offer them, and also help client libraries
developers to understand what they should work on. I assessed the
features of all client libraries by looking at their master branch on
github, to the best of my knowledge.
The README is getting rather large so split it into individual files.
The next step will be rendering these into HTML pages with a TOC so that
they are a bit more navigable.
What do people think of this?