alphabeta to alphabet

* fix memory leak in HystrixPlugins

* add heart beat handler to jetty

* add heart beat handler to jetty

* 用户接入 上上签

* add user

* Update CHANGES.md

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywaling-ui

* Update submodule skywalking-ui

* Fix bug stop stopSpan when not createSpan

* Fix bug stop stopSpan when not createSpan

* change the agent log level to millisecond

* add the function of the specified-agent-config

* Update README_ZH.md

* Use -D  to set the specified config path

* add docs

* update docs

* change method name

* add link

* change the function name

* change the key

* format doc

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywalking-ui

* Update submodule skywaling-ui

* Fix bug stop stopSpan when not createSpan

* Fix bug stop stopSpan when not createSpan

* change the agent log level to millisecond

https://github.com/apache/incubator-skywalking/pull/1574 removed the
maven wrapper jar. The shell script will try wget and then this
downloader if missing. It is very likely in windows and small vms for
people to not have wget installed, so this will prevent support problems
(and is why the wrapper includes this)

* Delete maven-wrapper.jar

* Update .gitignore

* [Agent] Provide plugin for Elasticsearch 5.x

Add [Agent] Elasticsearch transport client plugin

fix component name

add elasticsearch component

add elasticSearch component into component-libraries.yml

* update support list

* update PlainListenableActionFutureInterceptor.java

* fix set span attributes

* clear runtimeContext

* remove extra plugins

* Moves to Maven wrapper to stabilize the version in use

This will ensure those building will have similar experience due to
having a fixed maven version.

* Updates most plugin versions and removes redundant configuration

* Sets up build enforcement for JDK 1.8 until further work occurs

* Fix bug stop stopSpan when not createSpan

* Add egg component

* add koa component

* Update InstanceReferenceMetricAlarmAssertWorker.java

增加osInfo 判空

* Update InstanceReferenceMetricAlarmAssertWorker.java

增加osinfo 判空

add new user

* Update users.

* 优化代码结构,减少不必要的计算,节省计算资源

* 优化代码结构,减少不必要的计算,节省计算资源

* add activemq-plugin

* fix  update ActiveMQConsumerInstrumentation Enhance another class

* refacor ActiveMQConsumerInstrumentation code

* support both  topic and queue

* clear the code

* add UnitTest add fix bug

* fix obtain url  bug

* Refactor the ActiveMQProducerInstrumentation code

* fix bug

* fix ConstructorInterceptor BUG

* add Licensed

* Update application.yml

Restore configuration

* Restore configuration

* perfect test

* fix

* fix License

* fix  Project Files

* fix import class in instrumentation

* fix test case

* fix java doc

* fix  Trigger CI

* fix ActiveMQConsumerAndProducerConstructorInterceptorTest

* delete unit test

* fix

* fix

* fix  folder directory problem

* Delete ActiveMQConsumerInstrumentation.java

resolve the Integer overflow,convert the value to Long type

* add gzip support