Tools 0.2.3

• Output ccbrpipeliner module version in spooker metadata. (#43, @kelly-sovacool)
• Spooker now correctly outputs metadata as a yaml file. (#43, @kelly-sovacool)
• Improvements to ccbr_tools.pipeline.nextflow.run: (#44, @kelly-sovacool)
  • Use -resume by default and turn it off with --forceall.
  • Use --output option.
  • Run -preview before launching the pipeline with slurm.
  • When running on biowulf, try adding spooker to the PATH if it's not available.