Initial implementation support quit (telnet).
Request processing (telnet).

Inline commands such that a command is interpreted and a RESP response
is sent to the client either executing via a server command or via a
store command.
0.1.3
Decode incoming RESP messages and reply.

Can now execute commands via redis-cli.
0.1.4
Support ping command.
Support echo command.
Fix echo argument length check.

Move commands, prepare for client commands.
Support uppercase RESP commands.
Implement client getname and setname commands.
Send command not yet implemented error.
Implement monitor command.
Use unknown error.
Add test setup and teardown hook.

Add basic shutdown command to server to force terminate connections.
Handle case when command is not a string.