Back out the iterate change, which was wrong

Also some tests

Version 3.0.0

Triggered by an incompatible change to ITERATE

Fixes a bug in define-functions

Version 2.2.0: addeified collectors

Also clarify how versioning will work.

Version 2.1.0: add object-accessors

Version 2.0.0

Version 1.2.1: bugfix on 1.2.0

Version 1.2.0: bind/values ignores nil

Version 1.1.0: add binding