fix import

Author: CarloLucibello

src/Flux.jl

@@ -8,7 +8,8 @@ using Zygote, MacroTools, Juno, Reexport
 using MacroTools: @forward
 @reexport using NNlib
 using Zygote: Params, @adjoint, gradient, pullback, @nograd
-using Functors: @functor, functor, fmap, isleaf
+using Functors
+using Functors: @functor, functor, fmap
 export gradient
 
 export Chain, Dense, Maxout, SkipConnection, Parallel, flatten,

src/layers/basic.jl

@@ -41,7 +41,7 @@ end
 @forward Chain.layers Base.getindex, Base.length, Base.first, Base.last,
   Base.iterate, Base.lastindex, Base.keys
 
-functor(::Type{<:Chain}, c) = c.layers, ls -> Chain(ls...)
+Functors.functor(::Type{<:Chain}, c) = c.layers, ls -> Chain(ls...)
 
 applychain(::Tuple{}, x) = x
 applychain(fs::Tuple, x) = applychain(tail(fs), first(fs)(x))