changes.md

## 9.3.0

#### Project


#### OAP Server

* Add component ID(133) for impala JDBC Java agent plugin and component ID(134) for impala server
* Use prepareStatement in H2SQLExecutor#getByIDs.(No function change).

#### UI

* Fix: tab active incorrectly, when click tab space 
* Add impala icon for impala JDBC Java agent plugin.


#### Documentation


All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/149?closed=1)