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Below is a more complete list of the changes I am making, although some of
these may be counted in the last
numbers XXX below correspond to branches numbered scaled_adam_expXXX.
- from 412/413 (cherry-picked): dropout for attention in attention_squeeze and nonlin_attention modules,
but simplified this a little to use the same dropout schedule and drop them out all together
also have all 3 submodules use separate heads.
- from 460->461, which is in the history of 464, revert the part about balancing output out attention_squeeze module.
- merge from 462->467, about using TanSwish not tanh.
- merge 462->465, remove whitening in self-attention module
- merge the part of 465->466 that was about diagnostics (name in Whiten module)