Added permutation-context.clj as example
Added permutation-context.clj as example

Computes the context K as mentioned in GW97, 1.4, example 12, whose
concept lattice is isomorphic to the lattice of all permutations on a
finite set.

Signed-off-by: Daniel Borchmann <25857343a15bf1edafebc2912e82ecf775c585c1@mailbox.tu-dresden.de>

exot/conexp-clj,fcatools/conexp-clj,exot/conexp-clj,fcatools/conexp-clj,Lobage/conexp-clj,fcatools/conexp-clj,Lobage/conexp-clj,exot/conexp-clj,Lobage/conexp-clj,fcatools/conexp-clj,exot/conexp-clj,Lobage/conexp-clj,exot/conexp-clj,fcatools/conexp-clj