Beam search generalization

This release adds beam search support for all models we know how to support.

Transducer audit and testing

Merge pull request #366 from kylebgorman/test

Transducer audit and testing

Rotary positional encoding

Merge pull request #364 from kylebgorman/rotate

Rotary positional encoding support

More positional encoders

Merge pull request #363 from kylebgorman/position

Adds new interface for positional encoders

Causal transformer model added

v0.5.7

README got hosed

Student-/teacher-forcing audit

Merge pull request #357 from CUNY-CL/teacher

Audits student vs. teacher-forcing

v0.5.5: Merge pull request #361 from CUNY-CL/base

Adds a BaseEncoder class

Pointer-generator and transformer audit

v0.5.2

version bump

RNN audit

Merge pull request #348 from CUNY-CL/rnn

Tool-assisted audit of RNNs

Hard attention transducer validation loss improved

Merge pull request #345 from kylebgorman/loss

Consistent loss computation for hard attention