BLD: use angle bracket include for numpy
#include <Python.h>
#include <math.h>
-#include "numpy/ndarraytypes.h"
-#include "numpy/ufuncobject.h"
-#include "numpy/npy_3kcompat.h"
+#include <numpy/ndarraytypes.h>
+#include <numpy/ufuncobject.h>
+#include <numpy/npy_3kcompat.h>
#include "geos.h"
#include "pygeom.h"
