updating to api version 2, start looking for segfault error
fixing seg fault on exit on ubuntu.
Merge branch 'master' into poly_attributes
setting loop nodes to poly attributes, numerous debug messages!
clean up from stabilizing buildarray
added methods for copying to PolyValue from other values, and type converters
added type to Bool
PolyAttribute converts non poly input values to poly values
swapping BuildArray and ConstantArray nodes to handle poly attributes