update Cobb Douglas rewards

[alanlujan91]

for consumption and durables

Please ensure your pull request adheres to the following guidelines:

• Tests for new functionality/models or Tests to reproduce the bug-fix in code.
• Updated documentation of features that add new functionality.
• Update CHANGELOG.md with major/minor changes.

[codecov]

Codecov Report

Attention: 26 lines in your changes are missing coverage. Please review.

Comparison is base (6aed7cc) 73.02% compared to head (d36b094) 72.96%.

Files	Patch %	Lines
HARK/rewards.py	40.90%	26 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1363      +/-   ##
==========================================
- Coverage   73.02%   72.96%   -0.06%     
==========================================
  Files          79       79              
  Lines       13377    13403      +26     
==========================================
+ Hits         9769     9780      +11     
- Misses       3608     3623      +15     

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[alanlujan91]

Ready to review @AMonninger !

[akshayshanker]

@AMonninger. When you get a moment, can you please take a look at the additional rewards and marginal reward functions with durables and merge if OK?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 40.90909% with 26 lines in your changes missing coverage. Please review.

Project coverage is 72.96%. Comparing base (6aed7cc) to head (d36b094).
Report is 740 commits behind head on master.

Files with missing lines	Patch %	Lines
HARK/rewards.py	40.90%	26 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1363      +/-   ##
==========================================
- Coverage   73.02%   72.96%   -0.06%     
==========================================
  Files          79       79              
  Lines       13377    13403      +26     
==========================================
+ Hits         9769     9780      +11     
- Misses       3608     3623      +15     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[mnwhite]

Matt to look at this.

[mnwhite]

Updated changelog, merging without running tests because tests passed before.