Release time distributed model trained with new frame selection

[ejm714]

This PR updates the official time distributed model to one trained on the same dataset but using the new frame selection model (from https://github.com/drivendataorg/zamba/pull/195).

This was essentially a one line change of updating the directory for time_distributed in the WEIGHT_LOOKUP dictionary. All the updates to the files in the official_models directory happen automatically as part of the make publish_models command. 🎉

Bonus fixes and adds:

• updates the s3 directories of the other two models since we shuffled some things around in the s3 bucket
• adds instructions markdown file for updating a model

Closes https://github.com/drivendataorg/pjmf-zamba/issues/96

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[ejm714]

Comments integrated!

[codecov-commenter]

Codecov Report

Merging #199 (571d795) into master (57461a6) will decrease coverage by 0.0%. The diff coverage is 0.0%.

@@           Coverage Diff            @@
##           master    #199     +/-   ##
========================================
- Coverage    86.9%   86.9%   -0.1%     
========================================
  Files          29      29             
  Lines        1901    1902      +1     
========================================
  Hits         1653    1653             
- Misses        248     249      +1     

Impacted Files	Coverage Δ
zamba/models/config.py	97.1% <ø> (ø)
zamba/models/publish_models.py	0.0% <0.0%> (ø)