Change version to 1.20.1

Can Guler · Can Guler · commit 25c4f928eaa6 · 2019-04-18T14:20:59.000-07:00
diff --git a/version.go b/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.20.1-dev"
+const Version = "1.20.1"
