Include AMT tax brackets and relevant data to the federal data

[marc-lebourdais]

This pull request adds federal alternative minimum tax (AMT) brackets to each year's data.

[marc-lebourdais]

New York state tax brackets have also been updated to reflect the data in the IT-201 forms:
https://www.tax.ny.gov/pdf/2014/inc/it201i_2014.pdf#page=50
https://www.tax.ny.gov/pdf/2015/inc/it201i_2015.pdf#page=55
https://www.tax.ny.gov/pdf/2016/inc/it201i_2016.pdf#page=55
https://www.tax.ny.gov/pdf/2017/inc/it201i_2017.pdf#page=57
https://www.tax.ny.gov/pdf/2018/inc/it201i_2018.pdf#page=57
https://www.tax.ny.gov/pdf/2019/inc/it201i_2019.pdf#page=57

For 2020, I took the trend outlined by the following post from a random CPA from 2017:
https://www.cpajournal.com/2017/06/27/tax-changes-20172018-new-york-state-budget/

That said, I assume the post is correct based on the 2017-2019 official IT-201 documents.