missing include

Former-commit-id: de9217efff27ea725cb732a12348b3693275cc82

include/igl/boolean/mesh_boolean.cpp

@@ -1,6 +1,6 @@
 #include "mesh_boolean.h"
-#include <igl/peel_outer_hull_layers.h>
 #include <igl/per_face_normals.h>
+#include <igl/cgal/peel_outer_hull_layers.h>
 #include <igl/cgal/remesh_self_intersections.h>
 #include <igl/remove_unreferenced.h>
 #include <igl/unique_simplices.h>

include/igl/cgal/order_facets_around_edges.cpp

@@ -1,4 +1,5 @@
 #include "order_facets_around_edges.h"
+#include "../sort_angles.h"
 #include <type_traits>
 #include <CGAL/Exact_predicates_exact_constructions_kernel.h>