1.3.0

• Enhancement #21: Implemented ability to discover multiple meta files in directories
  instead of just one
• Enhancement #23: Raise ambigious error if a step resolves to more than one StepDef at runtime
• Bug #24: Change stepdef parameter interpolation for dry run mode so that
  $<name> becomes $[param:name] (otherwise it forever recurses)
• Enhancement #25: Add support for passing directories to the -m/--meta option instead of
  just files. All meta files within a specified directory will be recursively
  loaded.
• See also: change log