Changes for version 0.06
- Added a (theoretically) redundant dependency on Text::Diff to try to cover an odd smoke test failure.
- Fixed bugs in the internally used can_run_qx_which routine (was failing if system did not have a "which" command).
- Removed inherently non-portable tests from the MANIFEST: t/02-can_run_method.t
portably run external apps and capture the output