0.04  Wed Sep 19 04:28:19 EDT 2001
    * Ooops, we'd broken caller().  Turns out the tests were wrong.

0.03  Wed Sep 19 03:41:59 EDT 2001
    * Greatly simplified the uplevel logic

0.02  Wed Sep 19 03:03:10 EDT 2001
    * Fools croak()

0.01  Wed Sep 19 00:19:38 EDT 2001
    * First working version
    * Fools caller(), die() and warn().
    - Needs more work against, say, Carp.
    - Needs more work to check that it doesn't break the
      subtleties of caller, die and warn.