_cropped_file_size should be an int, fixes #1639

jedi/settings.py

@@ -98,7 +98,7 @@ parse the parts again that have changed, while reusing the rest of the syntax
 tree.
 """
 
-_cropped_file_size = 10e6  # 1 Megabyte
+_cropped_file_size = int(10e6)  # 1 Megabyte
 """
 Jedi gets extremely slow if the file size exceed a few thousand lines.
 To avoid getting stuck completely Jedi crops the file at some point.