Add dep.
Use constants module.
0.1.5
Update constant ref.
Update readme.

Document inline command support.
Remove static constant.
Add client dev dep.

Assert on pong server reply.
Assert on server shutdown and ping reply.
0.1.6
Fix pong reply, pass null error.
Add time utility function.
Include time in monitor function.
Assert on quit command.

Assert on ping bad args length reply.
Assert on time command.
Assert on echo command.
0.1.7
Assert on monitor args length error.
Error assert regexp is case-insensitive.

In case we decide to change to title case.
Assert on monitor command.

Currently we need to queue the sender requests otherwise the reply event
doesn't seem to fire on the monitor - this could be a decoder bug.
Improve monitor test spec.

Do not wait for the sender to get a reply but send multiple requests in
the same packet, relies on the improvements to jsr-resp.