* Update How-to-release.md
The public gpg file name should be KEYS, not KEY. It will contains other PMCs public key in this file after you export from the gpg tools.
* Provide consul cluster plugin.
* Change log and application config file.
* Add consul's config item into the docker's application.yml.
* Fixed bug.
* Add consul description into readme.
* Add okhttp component license.
* Move oal tool back into main repo, and fix compile issue.
* Fix two bugs.
* Remove all generated codes.
* Make all oal generated codes out of source control.
* Make mvn compile and package work.
* Fix test cases.
* Make compile right and provide new documents.
* Remove an unnecessary tokens file.
* Support alarm in service instance and endpoint.
* Fix alarm default settings and document.
* Fix wrong default setting
* Make service instance and endpoint scopes available in alarm core.
* Fix alarm bug.
* feat:Active System.env Config In Both Collector And agent.config.
1、moving related codes into apm-util module.
2、update Setting-override.md about how to use.
* resolve docs.
* typo
* finish test case.
* Update README.md
* Update new protocol
* Support new protocol at agent side.
* Fix test case.
* Make backend supports new trace protocol
* Fix tests.
* Make all new services available in gRPC.
* Fix bugs.
* Finish new document for v2 trace protocol.
* Fix wrong version requirement of zk
* Fix trace query bug.
* Find a client side dictionary bug.
* Fix register bugs.
* Fix break doc links.
* Change some codes to make zipkin receiver works, not done yet.
* @adriancole Zipkin receiver is coming back again.
* Fix document and fix for Zipkin receiver.
* Fix some bugs.
* Fix register bug.
* Fix transfer bug for new backend core.
* Support for overriding config with agent options
* Test the separator of options
* support quotes in agent options
* revert imports change
* add more tests
* clear properties after each test
* add document
* fix code style
* Lock oracle and resin plugins version.
* Move resin and oracle plugin to openskywalking
* Restore submodule active.
* Add another submodule active command.
* Remove the wrong test cases in release and fix some doc issues.
* [maven-release-plugin] prepare release v6.0.0-alpha
* [maven-release-plugin] prepare for next development iteration
* Fix some doc
2. Make service relation and endpoint relation to record component id.
3. Delete service mapping indicator.
4. Make service inventory to record mapping service id.
5. Refactor global topology query and service topology query.
* Replace v5 changes by a link to 5.x branch. New v6 changelog.
* Finish query doc and fix a missing field in alarm doc.
* Add link to official oal in alarm doc.
* Fix words.
* Fix some doc
* Update README.md
* Update README.md
* Update README.md
* Update README.md
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