added 2.10.2, and made it the default.
updated scalaz versions.
Added publishing to Bintray.
Changed license to more permissive MIT.
Update README.md
remove unused type parameter
Merge pull request #22 from xuwei-k/remove-type-param

remove unused type parameter
Fixed a potential stack overflow in build in hashJoin for large streams
Merge branch 'master' into clarifi