* tests/morpho_contrast.cc: Augment.
	* mln/core/concept/value.hh (cast): New.
	* mln/fun/v2v/saturate.hh: Update.
	* mln/morpho/minus.hh: Move assertions.
	* mln/logical/and.hh,
	* mln/logical/and_not.hh,
	* mln/logical/or.hh: Fix doc.

	* mln/value/int_s.hh (operator=): New.
	* mln/value/int_u.hh: Likewise.
	* mln/morpho/complementation.hh: New.
	* mln/morpho/includes.hh: Update.
	* mln/arith/revert.hh: New.
	* mln/logical/not.hh: New.


git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@1061 4aad255d-cdde-0310-9447-f3009e2ae8c0