pymule create strips the which_piece (#17)

pymule/createrun.py

@@ -213,7 +213,7 @@ def interogate(args={}):
     if 'stats' not in args:
         pieces = basic_ask(
             "Which pieces", ['0', 'F', 'R'],
-            parser=lambda x: x.split(',')
+            parser=lambda x: [i.strip() for i in x.split(',')]
         )
         args['stats'] = {}
         for piece in pieces: