reverse_sequence (from tensorflow.python.ops.array_ops) with seq_dim/batch_dim is deprecated

[tompollard]

Running python main.py with default settings raises the following warnings:

WARNING:tensorflow:From /usr/local/lib/python3.6/site-packages/tensorflow/python/ops/rnn.py:417: calling reverse_sequence (from tensorflow.python.ops.array_ops) with seq_dim is deprecated and will be removed in a future version.
Instructions for updating:
seq_dim is deprecated, use seq_axis instead

WARNING:tensorflow:From /usr/local/lib/python3.6/site-packages/tensorflow/python/util/deprecation.py:432: calling reverse_sequence (from tensorflow.python.ops.array_ops) with batch_dim is deprecated and will be removed in a future version.
Instructions for updating:
batch_dim is deprecated, use batch_axis instead