Update README, changelog for 2.5.0 release and clean up template documentation and configuration.

Author: hsz

.github/template-cleanup/README.md

@@ -7,15 +7,14 @@
 ## Template ToDo list
 - [x] Create a new [IntelliJ Platform Plugin Template][template] project.
 - [ ] Get familiar with the [template documentation][template].
-- [ ] Adjust the [pluginGroup](./gradle.properties) and [pluginName](./gradle.properties), as well as the [id](./src/main/resources/META-INF/plugin.xml) and [sources package](./src/main/kotlin).
+- [ ] Adjust the [group](./gradle.properties), as well as the [id](./src/main/resources/META-INF/plugin.xml), [name](./src/main/resources/META-INF/plugin.xml), and [sources package](./src/main/kotlin).
 - [ ] Adjust the plugin description in `README` (see [Tips][docs:plugin-description])
 - [ ] Review the [Legal Agreements](https://plugins.jetbrains.com/docs/marketplace/legal-agreements.html?from=IJPluginTemplate).
 - [ ] [Publish a plugin manually](https://plugins.jetbrains.com/docs/intellij/publishing-plugin.html?from=IJPluginTemplate) for the first time.
 - [ ] Set the `MARKETPLACE_ID` in the above README badges. You can obtain it once the plugin is published to JetBrains Marketplace.
 - [ ] Set the [Plugin Signing](https://plugins.jetbrains.com/docs/intellij/plugin-signing.html?from=IJPluginTemplate) related [secrets](https://github.com/JetBrains/intellij-platform-plugin-template#environment-variables).
 - [ ] Set the [Deployment Token](https://plugins.jetbrains.com/docs/marketplace/plugin-upload.html?from=IJPluginTemplate).
 - [ ] Click the <kbd>Watch</kbd> button on the top of the [IntelliJ Platform Plugin Template][template] to be notified about releases containing new features and fixes.
-- [ ] Configure the [CODECOV_TOKEN](https://docs.codecov.com/docs/quick-start) secret for automated test coverage reports on PRs
 
 <!-- Plugin description -->
 This Fancy IntelliJ Platform Plugin is going to be your implementation of the brilliant ideas that you have.

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 # IntelliJ Platform Plugin Template Changelog
 
-## [Unreleased]
+## [2.5.0] - 2026-04-17
 
 ### Changed