Simple example for pruning LSTM model

[Hrayo712]

Hi @VainF,

Thanks again for the amazing work!

From the Depgraph paper and the source code, I see LSTMs are technically supported. However, I have experienced similar behavior as the one reported by other users where LSTMs are for some reason not getting pruned.

See #44 #276

Could you perhaps provide a simple example for how to prune an LSTM model?

Thanks a lot for your time!