build: prepare for release and advance version to 0.2.1

Author: lppedd

Diff for: build.gradle.kts

@@ -1,21 +1,19 @@
-import org.jetbrains.intellij.tasks.PatchPluginXmlTask
-
 plugins {
   id("org.jetbrains.intellij") version "0.4.16"
   kotlin("jvm") version "1.4-M1"
 }
 
 group = "com.github.lppedd"
-version = "0.2.0"
+version = "0.2.1"
 
 repositories {
   maven("https://dl.bintray.com/kotlin/kotlin-eap")
   mavenCentral()
 }
 
 intellij {
-  version = "IU-2019.3"
-  pluginName = "Kotlin Additional Highlighting"
+  version = "IU-2019.2"
+  pluginName = "kotlin-additional-highlighting"
   setPlugins("Kotlin")
 }
 
@@ -27,10 +25,12 @@ tasks {
   compileTestKotlin {
     kotlinOptions.jvmTarget = "1.8"
   }
-}
 
-tasks.getByName<PatchPluginXmlTask>("patchPluginXml") {
-  version(project.version)
-  sinceBuild("193")
-  untilBuild(null)
+  patchPluginXml {
+    setPluginId("com.github.lppedd.kotlin-additional-highlighting")
+    version(project.version)
+    sinceBuild("192")
+    untilBuild(null)
+    pluginDescription(File("plugin-description.html").readText(Charsets.UTF_8))
+  }
 }

Diff for: plugin-description.html

@@ -0,0 +1,9 @@
+<p>
+  This plugin provides code style customization for
+  <strong>infix</strong> and <strong>operator</strong> (math & keyword) functions.
+</p>
+<br/>
+<p>
+  See more
+  <a href="https://github.com/lppedd/idea-kotlin-additional-highlighting">here at GitHub</a>.
+</p>

Diff for: src/main/resources/META-INF/plugin.xml

@@ -1,4 +1,3 @@
-<!--suppress PluginXmlValidity -->
 <idea-plugin>
   <id>org.example.untitled1</id>
   <name>Kotlin Additional Highlighting</name>