update package version

Jinyu-W · Jinyu-W · commit f5596344e407 · 2022-06-14T15:50:46.000+08:00
diff --git a/maro/__misc__.py b/maro/__misc__.py
@@ -2,6 +2,6 @@
 # Licensed under the MIT license.
 
 
-__version__ = "0.2.4a1"
+__version__ = "0.3.0a1"
 
 __data_version__ = "0.2"
