Warning on startup

Hello,
first of all, thank you for a great job! This is an awesome server for my needs. 
Just one detail: I've got a few warnings at startup in a console:
Code object coerced to string (please use .gist or .perl to do that)  in method new at lib/HTTP/Server/Simple.pm6:24

Using HTTP::Server::Simple::PSGI

I think, it's not a big deal, but anyway, it's better to know ;-) 

Thank you.
