[Nitro] Og update

[George Moschovitis]

Hello all,

I am planning an extensive update of the Og library. The api changes
will be minimal, but the new implementation will allow for some
*important* and some 'cool' new features.
Now is the time to send me your suggestions about things that are not
great in the current version, or ideas for new features. I plan to
work on this over the weekend.

regards,
George.

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