_____________________________________________________________________________
Immediately
- * we can nuke Atom.toAtom() now!
- - Topology crap is kinda messed up
+ - Sequence shouldn't be an Element -> make Union.add(Element)
+ - Should Tree<T> really be type-parameterized?
+
+ - More topology untangling
+ - needs/hates/follow API ugliness
- do Forest/Tree still need a Region?
- reconsider the degree of genericization