more a matter of cleanliness than a strong reason, but this allows to reuse bufio without ev (if wanted to.)

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.

otherwise we try to reschedule the socket we've just closed.

libevent is a very cool library, I like the APIs and enjoy using it. However, telescope is not as large and doesn't have as many file descriptor, so libevent is quite ``too big'' for our needs. ev started as a small event loop on top of poll(2) for amused, and can be used here too, it just needed to grow the ability to handle several timers, as we need quite some on telescope (in fact, we use more timers than fds!)

If we succeed to make a socket(2) but fail to connect(2), still attempt to reconnect using the other results from getaddrinfo(3).

At the moment telescope loads a mapping host:port/path -> certificate from a file and always uses it, no ways to change it, use a temporary one, generate a new one, etc are provided yet. The format of ~/.telescope/certs/certs is host port path certificate file name where the certificate file name is the name of a file inside ~/.telescope/certs. ~/.telescope/certs/ is ~/.local/share/telescope/ when using XDG.