update dependency paths

src/py/crankshaft/crankshaft/__init__.py

@@ -3,3 +3,4 @@ import crankshaft.random_seeds
 import crankshaft.clustering
 import crankshaft.space_time_dynamics
 import crankshaft.segmentation
+import crankshaft.regression

src/py/crankshaft/crankshaft/regression/__init__.py

@@ -0,0 +1,2 @@
+from crankshaft.regression.gwr import *
+from crankshaft.regression.glm import *

src/py/crankshaft/crankshaft/regression/gwr/__init__.py

@@ -0,0 +1 @@
+from base import *