Document config_change/3 callback
Document config_change/3 callback

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