added future in rowers folder

rowers/dataprepnodjango.py

@@ -1,3 +1,8 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
 # This is Data prep used for testing purposes (no Django environment)
 # Uses the debug SQLite database for stroke data
 from rowingdata import rowingdata as rrdata