support newest scipy

Author: zorzalerrante

corextopic/corextopic.py

@@ -22,7 +22,10 @@
 import numpy as np  # Tested with 1.8.0
 from os import makedirs
 from os import path
-from scipy.misc import logsumexp  # Tested with 0.13.0
+try:
+    from scipy.special import logsumexp
+except ImportError:
+    from scipy.misc import logsumexp  # Tested with 0.13.0
 import scipy.sparse as ss
 from six import string_types # For Python 2&3 compatible string checking
 from sklearn.externals import joblib