Visualizing lattice planes and vectors

[FelixTheTBone]

Dear Romain,

Many thanks again for developing this amazing toolbox!
Similar to the "-showcrystal" function visualizing the crystal orientation as cubes, would it be possible to visualize the corresponding orientation of lattice planes and vectors? For example, use "-showcrystal all" and in addition show all (0 1 -1) [1 1 1].
It might make it easier to interpret FEPX simulation results of the accumulated slip system shear "post.slip.core*".

Thank you in advance and best regards,