调整版本并做测试

pyenjoy/template/stat/ast/__init__.py

@@ -0,0 +1,12 @@
+# Export statement AST classes
+from .Stat import Stat, StatList
+from .Text import Text
+from .Define import Define
+from .Output import Output
+
+__all__ = [
+    'Stat', 'StatList',
+    'Text',
+    'Define',
+    'Output'
+]