Amazing! Now how do I use Elixir 1.3 with the new Erlang VM?
You just install the new Erlang VM, install Elixir 1.3, and that's it!
Elixir 1.3 is compatible with Erlang 19, and will by default use the Erlang installation available on the path, so nothing to do in particular.
If you want an easy way to install both, you can check asdf [1].