New Features:
- Add name replacement option to redact-email

Bugfixes:
- Tolerate quoted user.email values during tzcheck (#28)
- Ensure blank line between original message and extra (#31)
- Abort redate if startpoint is no ancestor of HEAD (#34)
- Pre-push issue with --tags (#24)
- Pre-push: Only alert about dirty tags if not yet public (#25)
- Issue with git-privacy init on Windows (#37)