[DDI-SRG] Universe

[Pascal Heus]

All:
looking at the UniverseScheme/Universe, wouldn't it be more consistent
to have Subuniverse renamed Universe? Nesting essentially takes care of
making this a subuniverse and is much easier to parse than having two
different names for the same element

Also, an idea that recently came up, given that we can have a
MachineReadable code for a universe, is to potentially generating
Universe level summary statistics. This may find its way in the Instance
(or possibly higher levels?)

later
Pascal