Allow @snoop without parentheses

[cool-rr]

Allow @snoop without parentheses

[cool-RR]

It's cute. I guess you'll have to bring back the parentheses if you'll want arguments. As long as the code isn't too ugly, go ahead. I also hope it would interact gracefully with #65, once that's done.

[alexmojaki]

This is now impossible to do reliably since the output can be a function. The only option is to change the signature so that output is passed as a keyword argument, e.g.

@snoop(output='file')

Maybe just call it out.

[cool-RR]

Nice observation. I think there is no choice but to close this feature request.