more small fixes

Author: nschloe

test/test_volume_mesh.py

@@ -37,7 +37,7 @@ def test_balls_union():
 
     mesh = pygalmesh.generate_mesh(
         u,
-        feature_edges=[circ],
+        extra_feature_edges=[circ],
         max_cell_circumradius=0.15,
         max_edge_size_at_feature_edges=max_edge_size_at_feature_edges,
         verbose=False,
@@ -77,7 +77,7 @@ def test_balls_intersection():
 
     mesh = pygalmesh.generate_mesh(
         u,
-        feature_edges=[circ],
+        extra_feature_edges=[circ],
         max_cell_circumradius=0.15,
         max_edge_size_at_feature_edges=max_edge_size_at_feature_edges,
         verbose=False,
@@ -115,7 +115,7 @@ def test_balls_difference():
 
     mesh = pygalmesh.generate_mesh(
         u,
-        feature_edges=[circ],
+        extra_feature_edges=[circ],
         max_cell_circumradius=0.15,
         max_edge_size_at_feature_edges=max_edge_size_at_feature_edges,
         min_facet_angle=25,