ShipIt::Step - a unit of work to be done prior to a release
Each step is implemented as a ShipIt::Step subclass, implementing an 'init' and 'run' method.
Given the provided ShipIt::Conf object, retrieve configuration keys your step know about (using $conf->value($key)), and set fields in $self (an empty hashref) for use later, in the 'run' method. You can't access the configuration later in the 'run' method, as the configuration is then locked down, already having been sanity checked for unknown or missing keys.
Run your step. Return on success, die on failure.
Use the provided ShipIt::State $state object to inquire about the state of the release thus far, as populated by previous steps.
ShipIt - the ShipIt system itself