Fix changelog formatting in IDE (#81)

* Fix changelog formatting in IDE

* Render only last item in changelog

* Update properties to use semver format

Author: helin24

third_party/CHANGELOG.md

@@ -1,4 +1,4 @@
-## Unreleased
+## 500.0.0
 
 ### Added
 
@@ -13,8 +13,7 @@
 ### Changed
 
 - Vendor change from "JetBrains" to "Google"
-- Build system change from Basel to Gradle
-
+- Build system change from Bazel to Gradle
 
 ## 251.27812.12
 

third_party/build.gradle.kts

@@ -1,3 +1,4 @@
+import org.jetbrains.changelog.Changelog
 import org.jetbrains.intellij.platform.gradle.IntelliJPlatformType
 import org.jetbrains.intellij.platform.gradle.TestFrameworkType
 import org.jetbrains.intellij.platform.gradle.models.ProductRelease
@@ -18,6 +19,7 @@ plugins {
     id("java") // Java support
     id("org.jetbrains.kotlin.jvm") version "2.2.21" // Kotlin support
     id("org.jetbrains.intellij.platform") version "2.10.3" // IntelliJ Platform Gradle Plugin
+    id("org.jetbrains.changelog") version "2.2.0" // Gradle Changelog Plugin
 }
 
 // Configure project's dependencies
@@ -39,7 +41,7 @@ intellijPlatform {
             untilBuild = providers.gradleProperty("pluginUntilBuild")
         }
         changeNotes = provider {
-            file("CHANGELOG.md").readText(Charsets.UTF_8)
+            project.changelog.renderItem(project.changelog.getLatest(), Changelog.OutputType.HTML)
         }
     }
     pluginVerification {

third_party/gradle.properties

@@ -7,7 +7,7 @@ pluginName = Dart
 pluginId = Dart
 
 # SemVer format -> https://semver.org
-pluginVersion = 500.0
+pluginVersion = 500.0.0
 
 # TODO(https://github.com/flutter/dart-intellij-third-party/issues/23) Add a changelog
 # Not currently used in the build.gradle.kts file: