Merge branch 'release/0.5.1'
add do_mix rpc
Merge pull request #34 from jubatus/feature/do_mix

add do_mix rpc
add accessors to get/set cluster name (fix #31)
Merge pull request #35 from jubatus/fix-31

Add accessor to get/set cluster name (fix #31)
bump version
Merge branch 'release/0.5.2'
Merge branch 'release/0.5.2' into develop
bump version
Merge branch 'master' into develop
Fix for py3
Support py3

- remove long
- fix decode method for bytes
- use list(map(...)) instead of map
Rename test codes
Add compatibility utilities and support py3
Use assertEqual instead of assertEquals