Version 2.1.28

Promote version 2.1.28-dev to 2.1.28.

Release branch for studio 4.1.

Change-Id: I88653c4a74ae796cb9a4e2d525b91b248389c921

src/main/java/com/android/tools/r8/Version.java

diff --git a/src/main/java/com/android/tools/r8/Version.java b/src/main/java/com/android/tools/r8/Version.java
index c481ead..283f647 100644
--- a/src/main/java/com/android/tools/r8/Version.java
+++ b/src/main/java/com/android/tools/r8/Version.java
@@ -11,7 +11,7 @@
 
   // This field is accessed from release scripts using simple pattern matching.
   // Therefore, changing this field could break our release scripts.
-  public static final String LABEL = "2.1.28-dev";
+  public static final String LABEL = "2.1.28";
 
   private Version() {
   }