### Added
- Added the `WEBSOCKET_ROOT` environment variable, which sets the root path to
use for all websocket connections made by the `.ws` user interface (thanks
[@maximthomas]).
### Changed
- The `.ws` and `.sse` endpoints are now served from every directory, not only
the root path.
- The websocket user interface served by `.ws` will now establish a websocket
connection to the directory it is served from, not only the root path.
- The websocket user interface now logs the URL that it connects to.