id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
79	contracts -- new classes	Fred T. Hamster	bugdock	"iterable?
  can support single direction iterator with start & next.

sequencable??
  can support iterable.
  can support indexed iterations with get(x).

"	new-feature	assigned	minor		feistymeow-experimental