Merge branch 'release/0.5.0'
Remove dependency to javassist
Fix error handler
Check nil value
Fix condition
Fix size of elements in tuple
Add get_proxy_status
Merge pull request #18 from jubatus/no-javassist

No javassist
Merge pull request #19 from rimms/add_get_proxy_status_no-javassist

Add get proxy status
bump version
Merge branch 'release/0.5.1'
Merge branch 'release/0.5.1' into develop
prepared development iteration of next version
Add cluster name getter and setter.
add do_mix rpc
do_mix method name should be `do_mix`
Merge pull request #22 from crow-misia/add_clustername_getter_setter

Add cluster name getter and setter.
change method name from {get,set}ClusterName to {get,set}Name (refs #22)
do_mix -> doMix
Merge pull request #23 from jubatus/feature/do_mix

add do_mix rpc