fixing bugs and adding contours to the payload

src/pg/sql/50_contours.sql

@@ -1,17 +1,3 @@
-CREATE OR REPLACE FUNCTION
-  CDB_Contours (
-    subquery TEXT,
-    grid_size NUMERIC DEFAULT 100,
-    bandwidth NUMERIC DEFAULT 0.0001,
-    levels NUMERIC[] DEFAULT null
-    )
-RETURNS table (level Numeric, geom text )
-AS $$
-  RETURN QUERY
-    select level, ST_GeomFromText(geom_text, 4326) as geom from _CDB_Contours(subquery,grid_size,bandwidth,levels);
-  RETURN;
-$$ LANGUAGE plpgsql;
-
 
 CREATE OR REPLACE FUNCTION
   _CDB_Contours (
@@ -26,3 +12,19 @@ AS $$
   # TODO: use named parameters or a dictionary
   return cdb_generate_contours(subquery, grid_size, bandwidth, levels)
 $$ LANGUAGE plpythonu;
+
+
+CREATE OR REPLACE FUNCTION
+  CDB_Contours (
+    subquery TEXT,
+    grid_size NUMERIC DEFAULT 100,
+    bandwidth NUMERIC DEFAULT 0.0001,
+    levels NUMERIC[] DEFAULT null
+    )
+RETURNS table (level Numeric, geom text )
+AS $$
+BEGIN
+  RETURN QUERY
+    select l as level, ST_GeomFromText(geom_text, 4326) as geom from _CDB_Contours(subquery,grid_size,bandwidth,levels);
+END;
+$$ LANGUAGE plpgsql;

src/py/crankshaft/crankshaft/__init__.py

@@ -1,2 +1,3 @@
 import random_seeds
 import clustering
+import contours