* Copies Base64 from Zipkin

This copies the last copy of Base64 from Zipkin which can avoid a
dependency on specific JRE. Notes in javadoc show its heritage. We
didn't have unit tests: they can be backported from the source:

https://github.com/square/okio/blob/cc1f5612506f86726c996be6b837b616892e12de/okio/src/test/kotlin/okio/ByteStringTest.kt#L230

Thanks to @swankjesse who created the eldest github ancestor :P

* Adds last version of encoding

* 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

* Add Rocketbot ui

* update set-up

* Update powered-by.md

www.mobanker.com user skywalking

* Update powered-by.md

Change order.

* Update powered-by.md

* 拉勾网使用skywalking进行调用链路监控

* Update powered-by.md

Change order only.

* 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

* Make metric value to long to avoid too big integer issue.

* Update protocol.

* Add a new filter to service number.

* Update README.md

* Update Screenshots.md

* Update Screenshots.md

* Update Screenshots.md

* Make sure heartbeat working always. cc @liuhaoyang make sure .net agent hasn't this issue.

* FIx CI.

add user case Yonghui Superstores

* Fixed the bug of remote client not blocked when not received on complete message, it will carry the out of a memory exception.

* Sleep 10ms, not to sleep max 10ms.

* No more than 10 stream observers are allowed at the same time to send remote message. Otherwise block the remote queue.

* no message

* Update ui

* Update ui

* Update ui

* Add license header

* Update powered-by.md

添加使用公司

* Update powered-by.md

Format order.

* Fix mesh receiver doesn't update heartbeat.

* Fix bug of mesh heartbeat and rest receiver.

* Fix issue: opencensus is included in agent without shade. @tuohai666

grammar fix

* Avoid service inventory object concurrency situation.

* Fix concurrency for minute persistence and others

* Fix document todo.

* Update license. Fix package with dirty agent plugin jar files.

* Fixed not combine error in persistence register worker.

* Update submodule skywalking-ui

* Fix k8s api bugs

* Fix api connection leak

* Update ui

* Update ui

* Update submodule skywalking-ui

* Add kubernetes and istio setup documents

* Remove kubernetes scripts

* Support maxConcurrentCallsPerConnection and maxMessageSize in grpcServer

* Make percent percent is 1/10000

* Fix test cases.

* Make service instance indicator dispatch based on server side only.

* Set init data right in AlarmMeta.

* Make endpoint query based on server side only.

* 1. Fixed the bug of the cluster node sync failure cause by curator instance cache is null.
2. Fixed the bug of the collection in remote data builder is not initialized.

* 1. Re-generate indicator.

* Fixed the bug of the collection in remote data builder is not initialized.

* Fixed the bug of the remote client created but not  initialize.

* Update submodule skywalking-ui

* Add docker compose cofig files.

* Update submodule skywalking-ui

* Fix k8s api bugs

* 添加北京国槐信息科技有限公司

北京国槐信息科技有限公司

* Update powered-by.md

Change the order in alphabeta.

add:1. Mypharma.com 北京融贯电子商务有限公司 https://www.mypharma.com

* Update submodule skywalking-ui

* Refactor kubernetes config

* Add ui image

* Revert reset feature.

* Set default dist alarm settings and make dist package setting files right.

* Support empty list.