Update CHANGELOG
Update CHANGELOG

joshprice/elixir,kimshrier/elixir,kimshrier/elixir,michalmuskala/elixir,elixir-lang/elixir,kelvinst/elixir,lexmag/elixir,pedrosnk/elixir,ggcampinho/elixir,lexmag/elixir,pedrosnk/elixir,kelvinst/elixir,ggcampinho/elixir