Add methods for formatOptions and formatCommands in Help, with example of option help groups #2248
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…e for option groups
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I am still thinking about help groups for options and commands per #1897. Still not happy I have a solid enough API to make it part of Commander.
This is a proof of concept of a refactor to make it easier for author to add their own support for help groups. Split out format of options and commands so author does not need to override whole of
formatHelp. Show example of adding help groups for options in subclass.Other help group experiments: #1908 #1910 #2176