Fix typespecs in Calendar (#5635)
Fix typespecs in Calendar (#5635)


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