Improve the pull request template and changelog (#5720)

.github/PULL_REQUEST_TEMPLATE

-Please answer these questions before submitting a pull request
+<!--
+    ⚠️ Please make sure to read this template first, pull requests that doesn't accord with this template
+    may be closed without notice.
+    Texts surrounded by `<` and `>` are meant to be replaced by you, e.g. <framework name>, <issue number>.
+    Put an `x` in the `[ ]` to mark the item as CHECKED. `[x]`
+-->
 
-- Why submit this pull request?
-- [ ] Bug fix
-- [ ] New feature provided
-- [ ] Improve performance
+<!-- ==== 🐛 Remove this line WHEN AND ONLY WHEN you're fixing a bug, follow the checklist 👇 ====
+### Fix <bug description or the bug issue number or bug issue link>
+- [ ] Add a unit test to verify that the fix works.
+- [ ] Explain briefly about why the bug exists and how to fix it.
+     ==== 🐛 Remove this line WHEN AND ONLY WHEN you're fixing a bug, follow the checklist 👆 ==== -->
 
-- Related issues
+<!-- ==== 🔌 Remove this line WHEN AND ONLY WHEN you're adding a new plugin, follow the checklist 👇 ====
+### Add an agent plugin to support <framework name>
+- [ ] Add a test case for the new plugin, refer to [the doc](https://github.com/apache/skywalking/blob/master/docs/en/guides/Plugin-test.md)
+- [ ] Add a component id in [the component-libraries.yml](https://github.com/apache/skywalking/blob/master/oap-server/server-bootstrap/src/main/resources/component-libraries.yml)
+- [ ] Add a logo in [the UI repo](https://github.com/apache/skywalking-rocketbot-ui/tree/master/src/views/components/topology/assets)
+     ==== 🔌 Remove this line WHEN AND ONLY WHEN you're adding a new plugin, follow the checklist 👆 ==== -->
 
-___
-### Bug fix
-- Bug description.
+<!-- ==== 📈 Remove this line WHEN AND ONLY WHEN you're improving the performance, follow the checklist 👇 ====
+### Improve the performance of <class or module or ...>
+- [ ] Add a benchmark for the improvement, refer to [the existing ones](https://github.com/apache/skywalking/blob/master/apm-commons/apm-datacarrier/src/test/java/org/apache/skywalking/apm/commons/datacarrier/LinkedArrayBenchmark.java)
+- [ ] The benchmark result.
+```text
+<Paste the benchmark results here>
+```
+- [ ] Links/URLs to the theory proof or discussion articles/blogs. <links/URLs here>
+     ==== 📈 Remove this line WHEN AND ONLY WHEN you're improving the performance, follow the checklist 👆 ==== -->
 
-- How to fix?
+<!-- ==== 🆕 Remove this line WHEN AND ONLY WHEN you're adding a new feature, follow the checklist 👇 ====
+### <Feature description>
+- [ ] If this is non-trivial feature, paste the links/URLs to the design doc.
+- [ ] Update the documentation to include this new feature.
+- [ ] Tests(including UT, IT, E2E) are added to verify the new feature.
+- [ ] If it's UI related, attach the screenshots below.
+     ==== 🆕 Remove this line WHEN AND ONLY WHEN you're improving the performance, follow the checklist 👆 ==== -->
 
-___
-### New feature or improvement
-- Describe the details and related test reports.
+- [ ] If this pull request closes/resolves/fixes an existing issue, replace the issue number. Closes #<issue number>.
+- [ ] Update the [`CHANGES` log](https://github.com/apache/skywalking/blob/c2141978d1039375598a32418b75161a78da22c1/CHANGES.md).

CHANGES.md

@@ -2,112 +2,19 @@ Changes by Version
 ==================
 Release Notes.
 
-8.2.0
+8.3.0
 ------------------
 #### Project
-* Support Browser monitoring.
-* Add e2e test for ALS solution of service mesh observability.
-* Support compiling(include testing) in JDK11.
-* Support build a single module.
 
 #### Java Agent
-* Support metrics plugin.
-* Support slf4j logs of gRPC and Kafka(when agent uses them) into the agent log files.
-* Add `PROPERTIES_REPORT_PERIOD_FACTOR` config to avoid the properties of instance cleared.
-* Limit the size of traced SQL to avoid OOM.
-* Support `mount` command to load a new set of plugins.
-* Add plugin selector mechanism.
-* Enhance the witness classes for MongoDB plugin.
-* Enhance the parameter truncate mechanism of SQL plugins.
-* Enhance the SpringMVC plugin in the reactive APIs.
-* Enhance the SpringMVC plugin to collect HTTP headers as the span tags.
-* Enhance the Kafka plugin, about `@KafkaPollAndInvoke`
-* Enhance the configuration initialization core. Plugin could have its own plugins.
-* Enhance Feign plugin to collect parameters.
-* Enhance Dubbo plugin to collect parameters.
-* Provide Thrift plugin.
-* Provide XXL-job plugin.
-* Provide MongoDB 4.x plugin.
-* Provide Kafka client 2.1+ plugin.
-* Provide WebFlux-WebClient plugin.
-* Provide ignore-exception plugin.
-* Provide quartz scheduler plugin.
-* Provide ElasticJob 2.x plugin.
-* Provide Spring @Scheduled plugin.
-* Provide Spring-Kafka plugin.
-* Provide HBase client plugin.
-* Provide JSON log format.
-* Move Spring WebFlux plugin to the optional plugin.
-* Fix inconsistent logic bug in PrefixMatch
-* Fix duplicate exit spans in Feign LoadBalancer mechanism.
-* Fix the target service blocked by the Kafka reporter.
-* Fix configurations of Kafka report don't work.
-* Fix rest template concurrent conflict.
-* Fix NPE in the ActiveMQ plugin.
-* Fix conflict between Kafka reporter and sampling plugin.
-* Fix NPE in the log formatter.
-* Fix span layer missing in certain cases, in the Kafka plugin.
-* Fix error format of time in serviceTraffic update.
-* Upgrade bytebuddy to 1.10.14
 
 #### OAP-Backend
-* Support Nacos authentication.
-* Support labeled meter in the meter receiver.
-* Separate UI template into multiple files.
-* Provide support for Envoy tracing. Envoy tracer depends on the Envoy community.
-* Support query trace by tags.
-* Support composite alarm rules.
-* Support alarm messages to DingTalk.
-* Support alarm messages to WeChat.
-* Support alarm messages to Slack.
-* Support SSL for Prometheus fetcher and self telemetry.
-* Support labeled histogram in the prometheus format.
-* Support the status of segment based on entry span or first span only.
-* Support the error segment in the sampling mechanism.
-* Support SSL certs of gRPC server.
-* Support labeled metrics in the alarm rule setting.
-* Support to query all labeled data, if no explicit label in the query condition.
-* Add TLS parameters in the mesh analysis.
-* Add health check for InfluxDB storage.
-* Add `super dataset` concept for the traces/logs.
-* Add separate replicas configuration for super dataset.
-* Add `IN` operator in the OAL.
-* Add `!=` operator in the OAL.
-* Add `like` operator in the OAL.
-* Add `latest` function in the prometheus analysis.
-* Add more configurations in the gRPC server. 
-* Optimize the trace query performance.
-* Optimize the CPU usage rate calculation, at least to be 1.
-* Optimize the length of slow SQL column in the MySQL storage.
-* Optimize the topology query, use client side component name when no server side mapping.
-* Add component IDs for Python component.
-* Add component ID range for C++.
-* Fix Slack notification setting NPE.
-* Fix some module missing check of the module manager core.
-* Fix authentication doesn't work in sharing server.
-* Fix metrics batch persistent size bug.
-* Fix trace sampling bug.
-* Fix CLR receiver bug.
-* Fix end time bug in the query process.
-* Fix `Exporter INCREMENT mode` is not working.
-* Fix an error when executing startup.bat when the log directory exists
-* Add syncBulkActions configuration to set up the batch size of the metrics persistent.
-* Meter Analysis Language.
 
 #### UI
-* Add browser dashboard.
-* Add browser log query page.
-* Support query trace by tags.
-* Fix JVM configuration.
-* Fix CLR configuration.
 
 #### Document
-* Add the document about `SW_NO_UPSTREAM_REAL_ADDRESS`.
-* Update ALS setup document.
-* Add Customization Config section for plugin development.
 
-
-All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/56?closed=1)
+All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/62?closed=1)
 
 ------------------
 Find change logs of all versions [here](changes).