Revision history for CPS
0.03 BUGFIXES:
* Declare dependency on at least perl 5.8 since weaken() fails tests on
earlier perls
0.02 CHANGES:
* Use Scalar::Util::weaken() in kwhile(), breaking cycle for $iter
and allowing body to care less about leaks. Also allows passthrough
of $k without intermediate sub{}
0.01 First version, released on an unsuspecting world.