added Evaluate_binomial_coefficients to rosettacode
added iterator expressions
correction to intro example
list comprehensions are now lazy
test code after new iterator stuff
added type check for 'Iterator'
fixed self referencial function problem created by going to immutable symbol tables
fixed inner function tail recursive calls not being marked as such
fixed integers.B() to use new way of summing using new iterator expression
fixed rosettacode Bernoulli number task code
fixed intro
started support for multi-part iterators
added support for multi-part iterators
update library and example code to use iterator expressions
fixed glitch arising from referencing in Closure being make lazy
added method computeReferencing to Closure
bumped version to 0.10