v0.2 — “Scende la Notte”

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