Ludwig 0.17.0

Release of 13 July 2022.

• add liquid crystal anchoring fd_gradient_calculation s7_anchoring

  • this is a replacement for 3d_7pt_fluid and does a slightly better
    job at the edges and corners by using a consistent surface normal.
    The anchoring properties are now specifed in a slightly different
    way.

  • For walls, see https://ludwig.epcc.ed.ac.uk/inputs/walls.html

  • For colloids, see https://ludwig.epcc.ed.ac.uk/inputs/colloid.html

  • The existing fd_gradient_calculation 3d_7pt_solid is retained, and
    existing input keys for anchoring will be recognised.

• add option for rectilinear grid format vtk output extract -l

• add option for 2d random nematic lc_q_initialisation random_xy

• A functional AMD GPU version is now available using HIP.

  • See https://ludwig.epcc.ed.ac.uk/building/index.html

• Various minor improvements