added conditional importer to init (otherwise an error is raised)

Author: janvanrijn

openml/__init__.py

@@ -23,6 +23,7 @@
 from .runs import OpenMLRun
 from .tasks import OpenMLTask, OpenMLSplit
 from .flows import OpenMLFlow
+from .utils import ConditionalImputer
 
 
 __version__ = "0.2.1"