RNN support and lagging residuals
Added
- "lagging" option for shrink in
co.Delayandco.Residual. co.RNN.co.LSTM.co.GRU.
Changed
phantom_paddingrenamed toresidual_shrink.
co.Delay and co.Residual.co.RNN.co.LSTM.co.GRU.phantom_padding renamed to residual_shrink.