CIRCUS

TODO list and known bugs

Gracefully exit (close sockets, FDs, etc.)
- see man page for atexit(3)
On socket close (specifically noticed after a PING without response), select will keep marking sockfd as ready to read, but the read results in an error, causing an infinite loop
- try reconnecting to socket if that happens
Call shutdown() on sockets before closing?
Could a server ever send an invalid message? If so, validate messages
Improve ircread() code to handle the case that no \n/\r is found within BUF_SIZE * 2 characters
- [https://stackoverflow.com/questions/6090594/c-recv-read-until-newline-occurs](See the accepted answer here)
Implement a "message queue" that will hold messages to be sent to the server in the order they were issued whenever the server socket is ready for writing
Use recursive make
- See this GNU Make Reference Manual page
Create irc_svconn and irc_chconn that represent, respectively, a server connection and a channel connection