1.5.1

[1.5.1]

Added

• merlin example null_spec, which may be used to generate overhead data for merlin.

Fixed

• The task creation bottleneck.
• Bug that caused the cmd stdout and stderr files of a step to be overwritten by that same step's restart
  section.

Changed

• Updated tutorial docs.
• Relocated code that ran upon import from file body to functions. Added the respective
  function calls.