Release 0.17.0

This release introduces a new command fclones dedupe
contributed by Thomas Otto (@th1000s).

Dedupe does not remove duplicate files, but it uses the copy-on-write capability
available on some file systems like BTRF or XFS to deduplicate
file data transparently.

What's Changed

• Extract linting and formatting to separate CircleCI jobs by @pkolaczk in #78
• Implement fclones dedupe command by @pkolaczk in #79
• Implement fclones dedupe command by @th1000s in #80
• Reflink bugfix, examples in --help by @th1000s in #81
• Documentation improvements by @pkolaczk in #82

Full Changelog: v0.16.1...v0.17.0