Revision history for Digest-PBKDF2

0.013   2017-12-31
    - Mark salt_len test TODO, because of intermittent failure;
      getting a 'Usage' message from somewhere on some systems,
      and I have not been able to reproduce it.

0.012   2017-12-30
    - Require newer Test::More

0.011   2017-12-30
    - Fix test by updating version constraint on
      Crypt::PBKDF2
