telescope-identity(1) and the tests don't need it anymore.

This avoids bringing the dependency on ev on telescope-identity(1) and the tests as well.

Make asr_run() work on top of ev. While here, rename the function names and add real error checking.

I'm not actually pround of the %s%s%s%s%s%s... etc, but it works fine. There's no need to do further escaping here, since consuming code is not supposed to reach inside the iri struct. It'll be made opaque maybe in the future.

Much of telescope works in terms of URI, so we convert each gopher link to an URI. However, we didn't urlencode the path parameter, thus failing on every link that contains spaces or similar invalid (in URI paths) characters. Issue reported by hryjksn on github, thanks! https://github.com/omar-polo/telescope/issues/14