v30.1.0 - 2022-04-05

Version 30.1.0 (2022-04-05)

• Add warning field to commoncode.Codebase headers.
• Add new functions get_jar_nv() and get_nupkg_nv() that accepts
  a filename of a JAR or nupkg and return a name/version tuple extracted
  using multiple heuristics.