Move classifier_serv to core::classifer
Eliminate old code
add session-pool expire/size options to jubakeeper
Merge branch 'develop' into feature/session-pool-expire
keeper: fix async-proxy's session-pool expire/size
change quick start procedure (refs #288)
Merge pull request #287 from y-oda-oni-juba/feature/session-pool-expire

implement jubakeeper --pool_size, --pool_expire option ( issue #266 )
Reformat code
improve error handling in ux_splitter (fix #286)
fix cpplint pre-commit to display errors correctly
jenerator: add get_client() api to jubatus cpp client
add test about jubatus-cpp-client get_client() api

+ regenerate client
+ fix: jenerator do not indent empty lines
Merge pull request #292 from y-oda-oni-juba/feature/get_client-api-cpp

add cpp-client get_client() method
Update for next release
update packaging tools for 0.4.2
bump version
Merge branch 'release/0.4.2'
Merge branch 'release/0.4.2' into develop
bump homebrew packaging version
Merge branch 'master' into develop