[Checkins] [zopefoundation/BTrees] e7fec5: Add basic compatibility for unittest runner.

[Jason Madden]

  Branch: refs/heads/issue137
  Home:   https://github.com/zopefoundation/BTrees
  Commit: e7fec591cf416405c0689f1bfc006b0f32603054
      https://github.com/zopefoundation/BTrees/commit/e7fec591cf416405c0689f1bfc006b0f32603054
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-03-22 (Sun, 22 Mar 2020)

  Changed paths:
    M BTrees/tests/test_dynamic_btrees.py

  Log Message:
  -----------
  Add basic compatibility for unittest runner.