The `_validate_request` function in `milla.auth.decorators` is a helper
used by the `auth_required` and `require_perms` decorators. It can also
be used by custom decorators, so it is now a first-class, documented,
public function.
In addition to setuptools entry point names, the authentication subsystem now
accepts Python classes directly as the value of the `milla.request_validator`
configuration setting. This removes the dependency on setuptools for
authentication, and allows more flexibility in application configuration.
Dustin
Dustin C. Hatch