[ES] Update enum to v1.4.0 (#1729)
[ES] Update enum to v1.4.0 (#1729)

* update enum to v1.4.0

* [update] enum lesson to v1.4.0

nscyclone/elixir-school,doomspork/elixir_school,nscyclone/elixir-school,doomspork/elixir_school,doomspork/elixir-school,doomspork/elixir_school,doomspork/elixir-school,doomspork/elixir-school,nscyclone/elixir-school,nscyclone/elixir-school