Changelog since 0.1.1: * save certificates per (host, port) tuple, not only per-host * don't crash on invalid lines in known_hosts * allow saving the new certificate after mismatch * fix cmd_scroll_down/up: they scrolled two line more than what intended * fix out-of-bound * automatic gemini:// on load-url * display a `!' when a non-focused tab gets loaded * added aliases for tab-{next,new,previous} * unbreak forward-char * debounce resize event * new heuristic to obtain the page title: if no h1 found, try with h2s and h3s * ask the user to save a page when it can't be rendered * drop the urgent flag when switching to a tab after closing one * fix tab width

before we (wrongly) always used the bundled version

glibc needs _GNU_SOURCE defined to make IOV_MAX visible. Use AC_USE_SYSTEM_EXTENSIONS and make sure to include compat.h before everything else. Found by cage_, thanks!

Use asr on OpenBSD to do DNS query lookups asynchronously. At the moment it seems a bit hard to provide the whole asr + asr_event stuff in the compat layer, so hide those bits behind an #ifdef; not the prettiest solution, but a working one. Future works may either: - provide a stub implementation for the asr stuff - bundle the libasr from OpenSMTD-portable