* Add reference to module architecture diagrams

* Changed order of the links according to PR comment

* Add SkyWalking plugin test framework doc

* Remove Chinese.

* Add a description to the env variable, CASE_SERVER_IMAGE_VERSION

* Fix typo

* Change paragraph structure.

Update all "incubator-skywalking" to "skywalking" ,"incubator-servicecomb-java-chassis" to "servicecomb-java-chassis" correctly, and ".gitmodules" will update at #2531 (#2548)

* 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

* Change oal doc.

* Remove typo

* Remove document WIP tag.

* Fix few words.

* no message

* Adjust contribution guides.

Add a lot of documents. @peng-yongsheng @hanahmily . Also @hanahmily , the k8 cluster management document and deploy document need you to add.

* 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

* Create Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update README.md

Add link in menu. Also related to #1360

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Update Architecture.md

* Add Zipkin receiver

* support shardingjdbc database storage feature

* Reorganize incubating and optional docs.

* Refactor English documents to guide end users.

* To bring forward a way to solve Import-Project-Eclipse-RequireItems-Exception

* way to solve Import-Project-Eclipse-RequireItems-Exception

* To bring forward a way to solve Import-Project-Eclipse-RequireItems-Exception

* Required items could not be found, when import project into Eclipse.

* using markdown style to quote the errors.

* provides a optional-plugin for tracking ignores enhancement(#1203)

* trace ignore plugin config support override by system.env

* optimize the trace ignore plugin and make normalization of pom

* add AntPathMatcher and an junit test for it

* No longer rely on the spring framework

* add license at file header

* rebuild pom and rewrite README

* rebuild optional-plugins pom

* clean up useless code

* modify junit

* rewrite the ant path match logic

* rename the matcher class

* add the trace ignore plugin introduce doc to incubating features menu.

* modify the README doc.

* remove Chinese in English doc.

* remove superfluous content of EN-doc.

* Update README.md

* update faq doc

* update faq

* update faq

* Register table description.

* Update Collector-Table-Description.md

Review and update the docs

* Update Collector-Table-Description.md

* Test link.

* Update Collector-Table-Description.md

* Tables of JVM Metric related finish.

* Table description finish.

* Update Collector-Table-Description.md

* Update Collector-Table-Description.md

* Module class rename to ModuleDefine, Module is the JDK9 class.

* Revert "Module class rename to ModuleDefine, Module is the JDK9 class."

This reverts commit 097665b97ea53b27565e362d28c2e8202710f4cd.

* Modify short column name.

* Modify the description of transaction metrics.

* Add section about collector table description in readme.

* Protoc plugin fails when build

* add doc for TraceCrossThread

Add an incubating feature in SkyWalking documents.

* Collector 5.0.0-alpha version upgrade FAQ.

* Update Upgrade.md

Reformat document and adjust some English.

* Add link.

* Provide document for TLS

* Provide direct uplink doc.

* Add namespace document.

* Provide token auth doc.

* Provide setting override document.

* Fix two typo.

* Fix more typos.

* Update docs for alpha release

* Delete a comma.

* Update How-to-build.md

* Add data-set licenses file

* Rename LICENSES-data-set to LICENSE-data-set

* Update LICENSE

* Remove fastclick from LICENSE

* Make the git submodule command to be a maven profile plugin. Let this command not execute by default install command.

* [maven-release-plugin] prepare release apm-5.0.0-alpha

* [maven-release-plugin] prepare for next development iteration

* Product name is not correct

* Add more documents for release.

* Change profile id.

* Add CHANGES file in distribution file.

* Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit ac815019.

* Revert "[maven-release-plugin] prepare release apm-5.0.0-alpha"

This reverts commit 095597c9.

* Add rat plugin to check dependency license and add license head into missing files.

* Fix docs.

* Exclude web ui config file.

* Next release guide.

* UI update.

* Update docs.

* Build source shell.

* Proposal our ROADMAP.

* Update ROADMAP.md

* Update ROADMAP.md

* Update ROADMAP.md

* Update ROADMAP.md

* Update ROADMAP.md

Remove already supported from roadmap.

* Update ROADMAP.md

Add UI roadmap

* Update ROADMAP.md

* Update ROADMAP.md

* Update ROADMAP.md

* Update ROADMAP.md