v0.50.0

Added

• App::origin() returns the site origin with no trailing slash: the config url when set, else the request's scheme and host. Build absolute URLs from it instead of the Host header.
• Clockwork's timeline has grey Cache lookup and Cache hit events. A page cache hit ends the lookup and times the hit through shutdown.

Changed

• With a config url set, only its host answers. A request for any other host (www, an IP, a forged Host header) gets a 307 redirect to the same path on that origin. Leave url out in development, or set it in site/data/env.json per deployment.