- support for creating a Node.DNA from a string
- fixed bug in Node.Find
- better support for storing execution pointer as Node instead of DNA
- reference iterators through IteratorReference
- removed "refpath" etc, replaced with reference iterator logic
- "pf.for-each" keyword finished
- support for having Node's as value of Nodes in Hyperlisp
  if node is part of "current tree" then only DNA is stored
  else entire node is stored as hyperlisp itself in value of node