Use asm:6.0 in kotlinp

Some class files can't be read with asm:4.0.

Make shadowJar when assembling the project.

libraries/tools/kotlinp/build.gradle.kts

@@ -12,8 +12,7 @@ shadows.extendsFrom(configurations.getByName("compile"))
 dependencies {
     compile(project(":kotlinx-metadata"))
     compile(project(":kotlinx-metadata-jvm"))
-    // We use an older version of ASM on purpose, to reduce the final application size
-    compile("org.ow2.asm:asm:4.0")
+    compile("org.ow2.asm:asm:6.0")
     testCompile(commonDep("junit:junit"))
     testCompile(projectTests(":generators:test-generator"))
 }
@@ -38,3 +37,9 @@ val shadowJar by task<ShadowJar> {
         attributes["Main-Class"] = "org.jetbrains.kotlin.kotlinp.Main"
     }
 }
+
+tasks {
+    "assemble" {
+        dependsOn(shadowJar)
+    }
+}