Release 4.0: Add ability to execute files and use their output (#2)

update_dotdee/__init__.py

@@ -18,7 +18,7 @@
 from property_manager import PropertyManager, mutable_property, required_property
 
 # Semi-standard module versioning.
-__version__ = '3.0'
+__version__ = '4.0'
 
 # Initialize a logger for this module.
 logger = logging.getLogger(__name__)