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.

This is still WIP and may change before the next release. It could be worthwile to resolve the URLs in load-url using the current page as base, so that while browsing <gemini://a.org/b/c>, using load-url to go to "/" would load <gemini://a.org/> instead of <file:///>. The new option `load-url-use-heuristic', if unset, provides exactly this behaviour. It is still a bit rough to use, as for e.g. loading <d.net> would now yield <gemini://a.org/b/d.net> instead of <gemini://d.net>. Will need more work in-tree, but for now add it so we can reason about it. See github issue #10

not that of a big deal, but since we memset() at the start, just add the spaces directly instead of using strlcat. saves some cpu cycles.

The 0/1 difference was once important since it would give the caller an idea whether the page was loaded immediately or asynchronously. This doesn't matter anymore. Furthermore, this whole family of function can't really fail (as telescope doesn't handle memory allocation failures gracefully.)