b359a24772
We now have ternary outcomes for `Builder.configure()` and `Builder.start()`: - Ok(Some(p)) means we were configured correctly, and can continue with our work normally - Ok(None) means that `lightningd` was invoked with `--help`, we weren't configured (which is not an error since the `lightningd` just implicitly told us to shut down) and user code should clean up and exit as well - Err(e) something went wrong, user code may report an error and exit.
Plugin Directory
Any file in this directory which is executable and whose name only consists of alphanumeric characters, space, '.', '-' or '_' will be automatically loaded when lightningd starts (unless suppressed with commandline options).