reset!(rnn)

Reset the hidden state of a recurrent layer back to its original value.

Assuming you have a Recur layer rnn, this is roughly equivalent to:

			rnn.state = hidden(rnn.cell)

Examples

			julia> r = Flux.RNNCell(relu, ones(1,1), zeros(1,1), ones(1,1), zeros(1,1));  # users should use the RNN wrapper struct instead

julia> y = Flux.Recur(r, ones(1,1));

julia> y.state
1×1 Matrix{Float64}:
 1.0

julia> y(ones(1,1))  # relu(1*1 + 1)
1×1 Matrix{Float64}:
 2.0

julia> y.state
1×1 Matrix{Float64}:
 2.0

julia> Flux.reset!(y)
1×1 Matrix{Float64}:
 0.0

julia> y.state
1×1 Matrix{Float64}:
 0.0