versions:
  - number: "1.0"
    date: "2014-07-21"
    description: "Initial release."
  - number: "1.1"
    date: "2015-07-15"
    description: "Incorporate errata."
  - number: "1.2"
    date: "2016-06-13"
    description: "POWER8 errata"
  - number: "1.3"
    date: "2016-06-13"
    description: "POWER9 errata"
  - number: "1.4"
    date: "2020-01-13"
    description: "Conversion from FrameMaker to DocBook, minor corrections."