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Second release, December 30th, 2015.
- Set target's default to parent of stow dir.
- Remove ``current`` link when stow failed.
- Abort when trying to unstow nonstowed package or uninstall missing package.
- Join commands ``install`` and ``reinstall``, ``stow`` and ``restow``.
- Uninstall requires user prompt.
- Check if path exists before installing.
- Add tests.