Merge branch 'develop'

* develop:
  bump version
  DRYed up some code
  Added PostType.parse to create object from CSV string
  Added 'its' helper to minitest
  bump version
  Split parsing specs into separate files
  price is gross when price type is nil
  Added methods to fetch gross & net price from VL
  strip whitespace from nrfid
  Changed default test format to :progress
  required numeric fields converts nil to 0
  Added some helpers to VA module
  Update README.md