Merge pull request #231 from larsoner/ioff

BUG: Set ioff to avoid immediate close

Author: fabianp

mprof.py

@@ -726,6 +726,7 @@ def xlim_type(value):
         print("matplotlib is needed for plotting.")
         print(e)
         sys.exit(1)
+    pl.ioff()
 
     profiles = glob.glob("mprofile_??????????????.dat")
     profiles.sort()