v. 1.2.9

See #39, release log:

• dee9dd9 by @kniazkov: Merge pull request #39 from kn...
• 3ff6c3d by @kniazkov: + test
• 200652f by @kniazkov: Utils
• 100883a by @kniazkov: 'Provider' interface

Released by Rultor 2.0-SNAPSHOT, see build log