Move the b3 Project to CBI Project

Type
Restructuring
Termination
State
Successful
End Date of the Review Period

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The heart of this proposal is to move the "b3 aggregator" to CBI. This seems logical, since while it may have some "outside" users, it is primarily used for our yearly Simultaneous Release, AFAIK.    My motivation is to give that aggregator a more visible, central home to both make it easier to maintain and encourage  contributions.