Merge pull request #11 from mpenet/greased

Using greased for ByteArrayIO
Update README
Tweak README
Temporarily disable `grease` dep
Housekeeping
RC1, add Clojure 1.6 test
Add `before-run`, `after-run` Expectations fns
Add `codox` lein alias
Lein :warn-on-reflection -> :global-vars
Add CHANGELOG.md
README typo
Housekeeping
Bump non-core deps
Add cjwz logo to README
v2.0.0
Add note to clear v1 build artifacts
Make `head-meta` ^:const
Expose low-level fns: `freeze-to-stream!`, `thaw-from-stream!`
Move Reader fallback out of Freezable protocol to make protocol extensible
Add support for custom thaw readers