Change adamantium dependency to only depend on the minor version
Merge pull request #21 from dkubb/fix-adamantium-dependency

Change adamantium dependency to only depend on the minor version
Deaktivate support for 1.9 hash key labels

* Feature was incorrectly implemented and needs to be rethought. #22
Fix YARD coverage
Safer 1.9 style hashes
Fix the BAREWORD regexp in Emitter::Literal::HashBody
Freeze the bareword
Merge pull request #23 from 7even/1_9_style_hashes

Safer 1.9 style hashes