Update version to v7.2.0

nasa9084 · nasa9084 · commit d6dc20bb3d2b · 2020-02-25T12:29:23.000+09:00
diff --git a/linebot/version.go b/linebot/version.go
@@ -16,4 +16,4 @@
 
 package linebot
 
-const version = "7.1.0"
+const version = "7.2.0"
