0.3
  - new function track_object, which can be used to track objects
    manually for cases where not all objects of a class should be
    tracked or if the object were created outside of perl
  - verify in Makefile.PL, that the weaken from Scalar::Util is
    usable (was not supported in old perl versions)
0.2
  - bugfix for not compiled regex (given from cmdline)
  - better documentation 

0.1
  initial release