benchmark

273deb78 - Attempting to rewrite TorchScript lstms to be more reusable (#43)

Attempting to rewrite TorchScript lstms to be more reusable (#43) Haven't actually plugged these into the benchmarking scripts yet, but this PR includes some of the LSTMs rewritten as ScriptModules. The oo-based approach makes it easier to write certain classes of custom LSTMs.