Concurrent-log-handler

- For publishing fork on pypi as `concurrent-log-handler` under new package name.
- NOTE: PyWin32 is required on Windows but is not an explicit dependency because the PyWin32
package is not currently installable through pip.
- Fix lock behavior / race condition

ConcurrentLogHandler 0.9.1
- Fixes deadlocking issue with recent versions of Python
- Puts `.__` prefix in front of lock file name
- Use `secrets` or `SystemRandom` if available.
- Add/fix Windows support