• Changed the 'failures' so that it is overridden by verbosity rather
  than the other way around.
  
• Added the 'comments' option, most useful when used in conjunction
  with the 'failures' option.
  
• Deprecated support for Perls earlier than 5.6.0.
  
• Allow '-I lib' as well as '-Ilib' in $Test::Harness::Switches
  (regression).
  
• Restore old skip parsing semantics for TAP < v13. Refs #39031.
  
• Numerous small documentation fixes.
  
• Remove support for fork-based parallel testing. Multiplexed
  parallel testing remains.