Changed fast numpy indexing to include 0

Author: fjwillemsen

kernel_tuner/searchspace.py

@@ -733,7 +733,7 @@ def get_list_param_indices_numpy(self) -> np.ndarray:
                 tune_params_to_index_lookup.append({ value: index for index, value in enumerate(param_values) })
                 tune_params_from_index_lookup.append({ index: value for index, value in enumerate(param_values) })
                 if (all_values_integer_nonnegative and 
-                    not all(isinstance(v, int) and 0 < v < 2**15 for v in param_values)
+                    not all(isinstance(v, int) and 0 <= v < 2**15 for v in param_values)
                 ):
                     all_values_integer_nonnegative = False