docker 3.0.1

on Python PyPI

List of PRs / issues for this release

Bugfixes

• Fixed a bug where APIClient.login didn't populate the _auth_configs
  dictionary properly, causing subsequent pull and push operations to fail
• Fixed a bug where some build context files were incorrectly recognized as
  being inaccessible.
• Fixed a bug where files with a negative mtime value would
  cause errors when included in a build context