Make K argument of plusn1 implicit.
Mv stuff around.
Rename invertible_plusn -> invertible_plusn_not_ring_charac.
Add invertible_plusn1_R, scal_ones, isobaryc_ms_eq.

                   lin_basis_aff_basis{,_rev,_equiv}.

Modify aff_gen_lin_gen{,_ms}_equiv, lin_gen_aff_gen{,_ms}_equiv,
       aff_basis_lin_basis_equiv, lin_basis_aff_basis_equiv,
       has_aff_dim_has_dim_equiv, has_dim_has_aff_dim_equiv.
Add aff_dim_uniq, has_aff_dim_has_dim_ms, has_aff_dim_Rn.

Rename aff_span_incl -> aff_span_monot_inclF,
       aff_span_monot -> aff_span_monot_invalF,
       baryc_weight_uniq -> aff_indep_decomp_uniq.
Add aff_span_normal, aff_span_decomp_ex, aff_span_lb,
    baryc_surjL_injL_bijL, baryc_bijL_{surjL,injL},
    aff_span_equiv, aff_span_glb,
    aff_gen_{aff_span,inclF}, aff_gen_decomp_ex{,_rev,_equiv}, aff_gen_cas,
    aff_indep_decomp_uniq_rev (WIP), aff_indep_decomp_uniq_equiv,
    aff_basis_aff_span_equiv, aff_basis_inclF,
    aff_basis_decomp_{ex,uniq,ex_uniq{,_rev_equiv}},
    has_aff_dim_aff_span{,_alt}, aff_basis_cas, has_aff_dim_cas.

       lc_kron_{l,r}_out_{l,r} -> lc_{l,r}_kron_{l,r}_out,
       baryc_kron_{l,r} -> baryc_l_kron_{l,r},
       am_ac_compat -> am_lc_compat,
       aff_gen_ms_equiv_R -> aff_gen_ms_equiv_R_lc.
Modify aff_gen_ms_equiv, aff_indep_aff_gen_R.
Add baryc_r_kron_{l,r}, am_normal,
    aff_gen_ms_equiv_R, aff_indep_aff_gen_R_lc.

    fct_lm_ms_correct, {aff_{span,gen,indep,basis},has_aff_dim}_ms_correct,
    aff_gen_ms_equiv (generalization of aff_gen_equiv_R).
Rename aff_gen_equiv_R -> aff_gen_ms_equiv_R.

Generalize nat_plus{,_zero}_reg_[l,r} to nat_AbelianMonoid.
Specialize concatnF_{one,two} for nat.
Rename dim_is_unique -> dim_uniq.

Modify def aff_indep (only for ord0).
Rename aff_indep_alt -> aff_indep_any (under prenex form).
Rm useless aff_dep_alt.
Add aff_indep_all, aff_indep_all_equiv,
    aff_dep_any, aff_dep_ex, aff_dep_ex_equiv,
    aff_indep_{revF,moveF,transpF}_equiv,
    aff_indep_Rms,
    aff_indep_aff_gen_R.

Rename affine_generator_equiv -> aff_gen_equiv_R (modified),
       affine_independent_generator -> affine_independent_gen_R.

  Finite_dim_AS_aff_span + Finite_dim_AS_aff_gen
  + Finite_dim_AS_Aff_indep + Finite_dim_AS_basis.
Update doc.
Update imports.