FEATURE: Child classes can now provide an exception_class()
method that returns the desired exception class, rather
than over-riding the whole throw() method. Existing classes
that over-ride throw() will still work as before.BUGFIX: Fixed a bug where multiple autodie-derived classes
would share the same subroutine cache. This could result
in excptions from the wrong class being thrown.
This bug did not affect programs which used only autodie,
or a single autodie-derived class.
BUGFIX: Missing 1.995 version tag added to export list.
TEST: Make sure that we always have a working version tag for
our current version.