Package protocol - Burrow types and interfaces.

CheckAndCreatePidFile takes a single argument, which is the path to a PID file (a file that contains a single integer, which is the process ID of a running process).

ConfigureLogger returns a configured zap.Logger which can be used by Burrow for all logging.

OpenOutLog takes a single argument, which is the path to a log file.

RemovePidFile takes a single argument, which is the path to a PID file.

Start is called to start the Burrow application.