Change Kotlin version to 1.3.21

cak · cak · commit f99129892630 · 2019-12-19T05:17:54.000-05:00
diff --git a/gradle.properties b/gradle.properties
@@ -1,2 +1,2 @@
 kotlin.code.style=official
-kotlin_version=1.3.61
+kotlin_version=1.3.21
