ZnTrack 0.6.2a2

What's Changed

• 660 use groups to create subdirectories in nwd by @PythonFZ in #661
• fix issue with zn nodes by @PythonFZ in #664
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #658
• test for duplicate group names by @PythonFZ in #669
• Additional tests by @PythonFZ in #671
• Bump version by @PythonFZ in #672
• bump pandas & poetry update by @PythonFZ in #676
• allow nested groups by @PythonFZ in #680
• Add Project(git_only_repo: bool) by @PythonFZ in #677
• add example module by @PythonFZ in #682
• open graph directly by @PythonFZ in #688
• Add Node.state.patch_open context manager by @PythonFZ in #691

Full Changelog: v0.6.2...v0.6.2a2