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- Update to 5.6.1
  * CGAL-5.6.1 is a bug-fix release.
    See on Github the list of bugs that were solved since CGAL-5.6.
    https://github.com/CGAL/cgal/releases/tag/v5.6.1
- Fix documentation packaging: Tumbleweed uses a different default
  destination than older distributions now. Force doc subdir.

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- Update to 5.6:
  * See https://github.com/CGAL/cgal/releases/tag/v5.6

- Update to 5.5.3:
  * https://github.com/CGAL/cgal/issues?q=sort%3Aupdated-desc+label%3AMerged_in_5.5.2+-label%3AMerged_in_5.5.1

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- Use gcc11-c++ for openSUSE Leap, enables building

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- Update to 5.5.2:
  * https://github.com/CGAL/cgal/issues?q=sort%3Aupdated-desc+label%3AMerged_in_5.5.2+-label%3AMerged_in_5.5.1

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- Update to 5.5.1
  * bug fix release compared to 5.5.0
  * https://github.com/CGAL/cgal/pulls?q=label%3AMerged_in_5.4.3+-label%3AMerged_in_5.4.2
- Release 5.5.0
  * The CGAL Open Source Project is pleased to announce the release
    5.5 of CGAL, the Computational Geometry Algorithms Library.
  ## 3D Alpha Wrapping (new package)
  * This component takes a 3D triangle mesh, soup, or point set as
    input, and generates a valid (watertight, intersection-free,
    and combinatorially 2-manifold) surface triangle mesh that
    contains the input. The algorithm proceeds by shrink-wrapping
    and refining a 3D Delaunay triangulation, starting from a loose
    bounding box of the input. Two user-defined parameters, alpha
    and offset, offer control over the maximum size of cavities
    where the shrink-wrapping process can enter, and the tightness
    of the final surface mesh to the input, respectively. Once
    combined, these parameters provide a means to trade fidelity to
    the input for complexity of the output.
  * See also the announcement page.
    https://www.cgal.org/2022/05/18/alpha_wrap/
  ## 2D Straight Skeleton and Polygon Offsetting (breaking change)
  * Fix the output of the function
    CGAL::create_exterior_skeleton_and_offset_polygons_with_holes_2()
    to not take into account the offset of the outer frame.
  * Fix the computation of the exterior offset of a polygon with
    holes that was not computing the offset of the holes
  ## 3D Convex Hulls
  * Added an overload of the function CGAL::convex_hull_3(), which
    writes the result in an indexed triangle set.
  ## 2D Polygons
  * Add vertex, edge, and hole ranges.
  * The concept GeneralPolygonWithHoles_2 now requires the nested
    type Polygon_2 instead of General_polygon_2.
  ## 2D Regularized Boolean Set-Operations
  * The concept GeneralPolygonSetTraits_2 now requires the nested
    type Construct_polygon_with_holes_2 instead of
    Construct_general_polygon_with_holes_2.
  ## Combinatorial Maps
  * Removed old code deprecated in CGAL 4.9 and 4.10 (global
    functions, and information associated with darts).
  ## 2D Arrangements
  * Fixed the intersect_2, compare_y_at_x_right, and
    compare_y_at_x_left function objects of the traits class
    template Arr_geodesic_arc_on_sphere_traits_2 that handles
    geodesic arcs on sphere and applied a small syntactical fix to
    the tracing traits.
  ## Tetrahedral Mesh Generation
  * Added the function remove_isolated_vertices() as a
    post-processing step for the tetrahedral mesh generation.
  ## Polygon Mesh Processing
  * Added the function
    CGAL::Polygon_mesh_processing::orient_triangle_soup_with_reference_triangle_soup(),
    which enables re-orienting the faces of a triangle soup based
    on the orientation of the nearest face in a   reference
    triangle soup.
  * Added the function
    CGAL::Polygon_mesh_processing::compatible_orientations(), which
    enables to retrieve the (in)compatibility of orientations of
    faces from different connected components.
  * Added the function
    CGAL::Polygon_mesh_processing::tangential_relaxation(), which
    applies an area-based tangential mesh smoothing to the vertices
    of a surface triangle mesh.
  * Added the named parameter visitor to the function
    triangulate_hole(), which enables to track progress with
    callbacks.
  * Added more functions in the visitor of the corefinement based
    methods to track progress.
  ## Surface Mesh Simplification
  * Introduced four variations of the Garland-Heckbert
    simplification algorithm based on the probabilistic approach of
    Trettner and Kobbelt (Fast and Robust QEF Minimization using
    Probabilistic Quadrics):   GarlandHeckbert_plane_policies,
    GarlandHeckbert_probabilistic_plane_policies,
    GarlandHeckbert_triangle_policies, and
    GarlandHeckbert_probabilistic_triangle_policies.
  * The class GarlandHeckbert_policies has been deprecated,
    GarlandHeckbert_plane_policies replaces it.
  ## Point Set Processing
  * A new optional named parameter, min_points_per_cell has been
    added to grid_simplify_point_set(). By adding a minimal number
    of points in a cell such that a point is retained, one can also
    filter out low   density areas and outliers: in the case of
    densely sampled point clouds, this yields better results than
    using grid simplification and then outlier removal, while being
    very vast. The default value is 1 to   keep the previous
    behavior as default.
  ## dD Spatial Searching
  * Added the member function write_graphviz() to the class Kd_tree
    that writes the tree in a stream in the Graphviz format.
  ## CGAL and the Boost Graph Library (BGL)
  * Added the function invert_selection() in the class
    Face_filtered_graph, which toggles the selected status of a
    graph: selected faces are deselected, and unselected faces are
    selected.

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- Update to 5.4.1:
  See https://github.com/CGAL/cgal/pulls?utf8=%E2%9C%93&q=label%3AMerged_in_5.4.1

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- Update to 5.4:
  See https://github.com/CGAL/cgal/releases/tag/v5.4

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- Update to 5.3:
  General changes:
  * The support for the compiled version of CGAL is dropped.
    Only the header-only version is supported.
  Quadtrees, Octrees, and Orthtrees (new package):
  * This package implements a tree data structure in which each
    node encloses a hypercubic section of space and each non-leave
    node has hypercubic children whose edge lengths are half its
    edge length.  Such a data structure is known as a quadtree in 2D,
    an octree in 3D, and is generalized as an "orthtree" in higher dimensions.
  Triangulations on the Sphere (new package):
  * This package enables the construction and manipulation of Delaunay
    triangulations on the 2-sphere.  Triangulations are built incrementally
    and can be modified by insertion or removal of vertices.  Point location
    querying and primitives to build the dual Voronoi diagram are provided.
  File Input / Output:
  * Point set, polygon soup, and polygon mesh file I/O functions have been
    harmonized and documented:
  * Point set I/O functions can be found in the packages Point_set_processing_3,
    and Point_set_3.
  * Polygon mesh I/O functions can be found in the package BGL.
  * Polygon soup I/O can be found in the package Stream_support.
  * A comprehensive list of the supported file formats is available in the
    Stream_support package here; inversely, the following page can be used to
    find out which CGAL data structures can be used given a specific file format.
  2D and 3D Linear Geometry Kernel:
  * Added is_translation(), is_scaling(), is_reflection(), and is_rotation()
    to the classes Aff_transformation_2 and Aff_transformation_3, which enable
    determining if the transformations use a specialized representation internally.
  2D Regularized Boolean Set-Operations:

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Update to 5.2.2

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CVE fixes.
Added openSUSE Bugs to the changelog

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