Rescale Lebedev weights for consistency

Author: Till Rettberg

micarray/modal/angular.py

@@ -274,4 +274,4 @@ def available_quadrature(d):
         warn("Lebedev grid of order {} has negative weights.".format(n))
     azi = q.azimuthal_polar[:, 0]
     elev = q.azimuthal_polar[:, 1]
-    return azi, elev, q.weights
+    return azi, elev, 4*np.pi*q.weights