Aliases (Ocamlary.Aliases)

`module Foo : sig ... end`
`module A' = Foo.A`
`type tata = Foo.A.t`
`type tbtb = Foo.B.t`
`type tete`
`type tata' = A'.t`
`type tete2 = Foo.E.t`
`module Std : sig ... end`
`type stde = Std.E.t`

#### include of Foo

Just for giggle, let's see what happens when we include `Foo`.

`include module type of Foo`
`module A = Foo.A`
`module B = Foo.B`
`module C = Foo.C`
`module D = Foo.D`
`module E : sig ... end`
`type testa = A.t`

And also, let's refer to `A.t` and `Foo.B.id`

`module P1 : sig ... end`
`module P2 : sig ... end`
`module X1 = P2.Z`
`module X2 = P2.Z`
`type p1 = X1.t`
`type p2 = X2.t`