update package version

Jinyu-W · Jinyu-W · commit 246f2f57d135 · 2021-09-27T10:27:42.000+08:00
diff --git a/maro/__misc__.py b/maro/__misc__.py
@@ -2,6 +2,6 @@
 # Licensed under the MIT license.
 
 
-__version__ = "0.2.3a4"
+__version__ = "0.2.4a1"
 
 __data_version__ = "0.2"
