Flags added and more aesthetic changes
modified:   Makefile
new file:   src/Args.hs
modified:   src/Client.hs
modified:   src/Client/Conn.hs
modified:   src/Client/Loop.hs
modified:   src/Client/Serve.hs
modified:   src/Client/Util.hs
modified:   src/Main.hs
modified:   src/Server.hs
modified:   src/Server/Loop.hs
modified:   src/Server/Users.hs
modified:   src/Server/Util.hs