Update CHANGES.md
Bump version to 0.5.0
Bump version to 0.6.0.pre (codename Garland, unreleased)
Check JRuby on Travis
Fix stack level too deep when writing to ChunkStream
Merge pull request #148 from bastjan/master

Fix stack level too deep when writing to ChunkStream
Merge pull request #5 from celluloid/master

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