Revision history for Safe-Isa
+ - fix scalar/list context handling for $_call_if_can
+
+1.000007 - 2017-09-22
+ - added new interface: $obj->$_call_if_can
+
+1.000006 - 2016-10-31
- now falling back to $obj->isa if DOES/does is not implemented on the
object, to avoid fatal errors on perls too old to have their own DOES
(RT#100866)