Use Base.encode32 when generating cookie to avoid unsafe chars, closes #9328
Use Base.encode32 when generating cookie to avoid unsafe chars, closes #9328

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