changes.md

## 9.1.0

#### Project

* Upgrade zipkin to 2.23.16.

#### OAP Server

* Add component definition(ID=127) for `Apache ShenYu (incubating)`.
* Fix Zipkin receiver: Decode spans error, missing `Layer` for V9 and wrong time bucket for generate Service and
  Endpoint.
* [Refactor] Move SQLDatabase(H2/MySQL/PostgreSQL), ElasticSearch and BanyanDB specific configurations out of column.
* Support BanyanDB global index for entities. Log and Segment record entities declare this new feature.
* Remove unnecessary analyzer settings in columns of templates. Many were added due to analyzer's default value.
* Simplify the Kafka Fetch configuration in cluster mode.

#### UI

* General service instance: move `Thread Pool` from JVM to Overview, fix `JVM GC Count` calculation.
* Add Apache ShenYu (incubating) component LOGO.

#### Documentation

All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/128?closed=1)