type system can't add predicate with ":"

[zhuyaoyhj]

I want to create type system with ratel, but the following situation occurs。Type system Test can't add predicate with ":".

[manishrjain]

Try putting brackets around the predicate name <schema:something>.

[paulftw]

Same as i18n characters : would violate graphql spec, but a PR is under review:
#122

[campoy]

This should be supported by Ratel, yeah.

Thanks for the support @paulftw