takes a string because the internals of telescope makes it easier to use if a string.

phos was an attempt at building a gemini client/server library. It didn't went as I expected, mostly because it's such a simple protocol... Anyway, the only use in telescope was for the uri module, which has already been replaced with the built-in iri. Which still sucks (and despite the name, can still only handle URIs) but it's hopefully better. The APIs are better.

While here, make 'em dinamically allocated.

This semplifies a bit the handling. humanify_url() now takes the base URL which we can then use when not using the heuristics. Command-line arguments now take an implicit base of <file://$PWD/> when the heuristics are disabled, so that foo.gmi resolves to the local file even without <./>. See github issue #10.

It stemmed from my misuse of iri_parse(). There's nothing wrong in the parser (that I found at least), but one more test won't harm.

These navigates respectively one level up in the path hierarchy, to the root directory and to the "home". The home is considered to be the first path component in the form of ~username. `home' is yet to be implemented.