How do I recompile an Elixir project and reload it from within iex?

I'm currently learning Elixir by going through the OTP and mix tutorial on the elixir-lang website, and I'm having trouble finding out how to recompile and reload the project from within the shell. In Erlang I would do make:all([load]) and it would compile and load any changes that occurred. However, in iex that always says :up_to_date, which does make sense, as Elixir uses mix for it's compiling