Suggestion to allow prevention of nag warning

[jottinger]

What is the feature or improvement?
Right now, if s nonsecure port is used for connection, a KittehNagException is reported as a non-terminating exception (everything works, you just get the exception trace). I don't mind the nag, but it would be nice if there was a way to turn off the entire trace explicitly, especially for testing, as the exception is a giant swath of text that gets emitted EVERY TIME. If I know what I'm about, especially during testing, I should be able to forcibly suppress the information I expect and don't need.

[mbax]

#283 maybe?