1.00    Date: 2003/06/19 21:40

* Initial revision
  Copied from Class::Singleton, modified as necessary

1.01    Date: 2003/06/20

* Completely reworked test.pl so that
   - it uses Test.pm
   - tests the scope issues raised by weak references

1.02    Date: 2003/07/08

* Pod syntax fix

1.03    Date 2003/08/06

* Add SIGNATURE, MANIFEST.SKIP
* Fixed Makefile.PL to include Scalar::Util, 5.6 prereqs.

1.04 ???

1.05    Date 2008/11/12

* Removed Build.PL, author tests, SIGNATURE