From: Yaroslav Halchenko <debian@onerussian.com>
Subject: new argument was removed in 1.5.1

and deprecated since 1.3 ;)

--- a/src/common.py
+++ b/src/common.py
@@ -1874,7 +1874,7 @@ class Projection(object):
         if max is None:
             max = weights.max()
         bins = numpy.linspace(min, max, nbins+1)
-        return numpy.histogram(weights, bins, new=True)  # returns n, bins
+        return numpy.histogram(weights, bins)  # returns n, bins
 
     def describe(self, template='projection_default.txt', engine='default'):
         """
