Update CHANGELOG
Update CHANGELOG

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