Change order of imports for RTD

GPy/__init__.py

@@ -3,17 +3,17 @@
 import warnings
 warnings.filterwarnings("ignore", category=DeprecationWarning)
 
-import core
-import models
-import mappings
-import inference
 import util
-import examples
+import core
+import kern
+import mappings
 import likelihoods
+import inference
+import models
+import examples
 import testing
 from numpy.testing import Tester
 from nose.tools import nottest
-import kern
 from core import priors
 
 @nottest