Log Message:
Update to 0.68

Upstream changes:
0.68   2021-05-18
    - Revert undocumented change that was causing unreasonably verbose output
      See https://github.com/DrHyde/perl-modules-Test-Differences/issues/5
    - Improve documentation about text vs data mode and eq_or_diff_{text,data}
      See https://github.com/DrHyde/perl-modules-Test-Differences/issues/8