release version 1.5.3

Make getAfterRun un-block avoid deadlock. (sofastack#107) (sofastack#109

)

* Make getAfterRun un-block avoid deadlock. (sofastack#107)

* update readme

Make getAfterRun un-block avoid deadlock. (sofastack#106)

修复Bolt死锁的问题 (sofastack#97)

* fix sofastack#96

* close Connection in RpcHeartbeatTrigger but do not change the closed state of Connection

* close channel in RpcHeartbeatTrigger

* add log

* code format

* fix ci exception in jdk1.6

Release/1.5.1 (sofastack#91)

Release/1.5.1

update version to 1.4.4

version 1.4.3

Merge pull request sofastack#81 from alipay/tuning/modify_version

modify version

Release/1.4.2 (sofastack#27)

Tuning/travis modify (sofastack#7)

* (tuning) modify travis jdk version