[Openframeworkwg] provider independence

[Bernard Metzler]

...at another level of granularity and hopefully not
to much off-topic.

Are we all agree on the following requirements
for the upcoming interface:

(1) must be provider agnostic (well, some providers may only
    implement a subset of functionality, but that is managed
    in a generic way),
(2) multiple providers can be used from one application
    in parallel,
(3) changes to provider code does not enforce recompilation
    of the application.

Thanks,
Bernard.