A net.Conn compatible implementation with telnet support.
This is a drop-in replacement for net.Dial that handles telnet negotiaton and other out-of-band messages transparently.
It currently refuses and/or disables all options in a sane manner, except for binary transmission. It disables the Go-Ahead and and ECHO options as well.
Further work needs to be done to implement other telnet options. This is planned, however I have little motivation to do so at the moment.
Current version requires Go1.8 to utilize the os specific writev functions.