Redo connection API (not yet integrated; project build fails)
conn: Delete node before free()-ing the connection
Rename u_{auth,oper,link} to u_{auth,oper,link}_block
Remove tethys linebuf.
auth: I suck at sed -i
conn: Add API for direct write to conn send queue
Add 'link', IRC connections
Integrate link (yay, build completes!)
Add listeners
link: Remove u_link_detach
link: Send (S)QUIT for exceptional conditions
Merge branch 'conn-redesign'