6.0.0

Removed

• autoeval setting. I haven't heard of anyone setting it to false.
• pp, putl, eval. People just want to evaluate Ruby code, so the less
  magic the better. Most of the people probably were not aware that byebug
  was overriding stuff like pp or eval. Only keeping ps as the single
  "enhanced evaluation" command.
• verbose setting.
• info catch command. Use catch without arguments instead.
• R command alias for restart.

Changed

• info args is now var args.
• interrupt is now aliased to int, not to i.
• API to define custom commands and subcommands (see the Command class).

Fixed

• #140. help command
  not showing the list of available commands and their descriptions.
• #147. Setting
  breakpoints at symlinked files.

Added

• API to define custom command processors (see the CommandProcessor class).