Add more flexibility in data for use with Tax-Calculator

[jdebacker]

This PR updates OG-USA to use the TMD datafile for Tax-Calculator -- and allows users to import a custom datafile with associated growth factors and weights.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.

Project coverage is 73.15%. Comparing base (29acbee) to head (60a8920).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #114      +/-   ##
==========================================
- Coverage   73.29%   73.15%   -0.14%     
==========================================
  Files          11       11              
  Lines         865      868       +3     
==========================================
+ Hits          634      635       +1     
- Misses        231      233       +2     

Flag	Coverage Δ
unittests	73.15% <82.35%> (-0.14%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
ogusa/calibrate.py	37.76% <100.00%> (+0.43%)	⬆️
ogusa/constants.py	100.00% <ø> (ø)
ogusa/get_micro_data.py	94.02% <81.25%> (-2.80%)	⬇️

[rickecon]

@jdebacker. There another place where you might want to update the version to 0.1.9.

• in lines 80-81 of ./cs-config/cs_config/functions.py, it looks like the get_version() function is calling an old version of OG-USA (v. 0.1.2).

I went ahead and committed this change.

[jdebacker]

@jdebacker. There another place where you might want to update the version to 0.1.9.
in lines 80-81 of ./cs-config/cs_config/functions.py, it looks like the get_version() function is calling an old version of OG-USA (v. 0.1.2).
I went ahead and committed this change.

Ok - I noticed that, but decided to ignore since (1) it should read the version from the ogusa package and not be hardcoded like that and (2) I'm now convinced these cs-config files should be removed from the repo (but that will be done in a future PR).

[rickecon]

@jdebacker. This looks great and all tests have passed. Merging.