Allow for old plugins to hook into /help

[Evan Markowitz]

Would there be a way to register command's /help data from the old method in loaded plugins? This way players can see a more accurate showing of what they have access to or not

[14mRh4X0r]

This will take magic, but I'll give it a try

[14mRh4X0r]

Make etc.addCommand to forward to the recode /help

Resolves issue #2

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