Log message:
*: switch to versioned_dependencies.mk for py-setuptools

Log message:
py-ZopeTestrunner: updated to 5.2

5.2:
- Add support for Python 3.8.
- When a layer is run in a subprocess, read its stderr in a thread to avoid
  a deadlock if its stderr output (containing failing and erroring test IDs)
  overflows the capacity of a pipe

Log message:
py-ZopeTestrunner: updated to 5.1

5.1:
- Recover more gracefully when layer setUp or tearDown fails, producing
  useful subunit output.
- Prevent a spurious warning from the ``--require-unique`` option if the
  ``--module`` option was not used.
- Add optional buffering of standard output and standard error during tests,
  requested via the ``--buffer`` option or enabled by default for subunit.
- Fix incorrect failure counts in per-layer summary output, broken in 4.0.1.

5.0:
- Fix test failures and deprecation warnings occurring when using Python 3.8a1.
- Drop support for Python 3.4.

Log message:
py-ZopeTestrunner: updated to 4.9.2

4.9.2:
- Fix TypeError: a bytes-like object is required, not 'str'
  running tests in parallel on Python 3.

4.9.1:
- Fix AssertionError in _DummyThread.isAlive on Python 3

Log message:
py-ZopeTestrunner: added version 4.9

This package provides a flexible test runner with layer support.