Update OG-USA environment

[jdebacker]

This PR updates the OG-USA environment to be consistent with the environment used for other PolicyBrain tools.

A few adjustments were made to the demographics.py script to work with the updated version of NumPy.

The SS works fine. I am still running the full tax function estimation and time path equilibrium. Hold off on merging until those are reviewed.

[hdoupe]

@jdebacker This looks good. Thanks for the quick response on this issue.

[jdebacker]

Update: The time path solution completed and results look very similar to what we had before (differences from prior runs appear small enough that I think they are due to updating from Tax-Calc 0.8.3 to 0.12.0).

If this satisfied the environment for PolicyBrain, I will merge. @hdoupe let me know.

[hdoupe]

This is great. Thanks again for the quick response. This should be fine. I looked through the changes you made and they appear pretty minor. Which reform did you use to run the model?

I added a quick test to compare the macro output data in PR #316 . If you used a reform that was used in the regression tests, we could compare the results and be a little more certain that nothing broke in the update.

[jdebacker]

@hdoupe I just ran the baseline. I did get the exact same results using old tax functions, so I think we are ok. In my run over night, the tax functions would have changed (slightly) due to changes in tax-calculator.

I'll go ahead and merge.

[hdoupe]

That makes sense. Thanks

[rickecon]

I see @talumbau adding and removing "in progress" labels to these issues. Much appreciated. I have to believe that TJ has set up a GitHub bot on his account to do this. Otherwise, TJ is a very vigilant issue label maintainer.

[andersonfrailey]

I see @talumbau adding and removing "in progress" labels to these issues. Much appreciated. I have to believe that TJ has set up a GitHub bot on his account to do this. Otherwise, TJ is a very vigilant issue label maintainer.

Personally, I like the believe it's the latter.