Mqcnn rts

[lovvge]

Issue #, if available:

Description of changes:

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Todo

• add support for categorial features

• option to ignore dynamical-features (like ignore in SageMaker DeepAR)

• fix instance splitter

• add observed value indicator (see Add missing value support for ForkingSeq2Seq Estimators (MQCNN, MQRNN) #704)

[codecov-io]

Codecov Report

Merging #668 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #668   +/-   ##
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  Coverage   85.87%   85.87%           
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  Files         172      172           
  Lines       11037    11037           
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  Hits         9478     9478           
  Misses       1559     1559           

[AaronSpieler]

The option to ignore dynamical-features will need some refactoring in the _forking_network.py.
Basically I effectively added a test also that tests whether this is possible currently, and its not, which is why all tests are failing.

[AaronSpieler]

So from master there was a change that removed shuffling all-together except on a single batch basis.

[AaronSpieler]

This must have been a pretty big bug in the seq2seq library right? If you look at the default enc2dec the third second output is the decoder_input_dynamic, not the third, thus decoder_input_dynamic has been dropped thus far and future_dynamic_feat used in its place

[AaronSpieler]

I also removed the third output of enc2dec because it was never used and I did not see the point, but I'm open to putting that back.

[AaronSpieler]

@lostella do you have any preference here regarding my last comment?

[lostella]

Looks good to me! What an effort! Any last-minute adjustments? After those this can go in