Version

• Package number in the form <major>.<minor>.<patch> or <major>.<minor>.<patch>.<dev>
  • See principles at https://semver.org/
  • Major version when you make incompatible API changes
  • Minor version when you add functionality in a backward compatible manner
  • Patch version when you make backward compatible bug fixes
  • Other engagement rules: see e.g. BioconductoR
• Parsed and compared by base::package_version()
• Forms the basis of dependency checking

The topic of version numbering will come up again later in Chapter 21.