Taxcalc

| Contributor | PR | Description |
| :-- | :-- | :-- |
| Anderson Frailey | 1257 | Add MTR with respect to spouse earnings |
| Martin Holmer | 1265 | Add tax differences table to Tax-Calculator CLI --tables output |
| Peter Steinberg | 1198 | Add testing for notebooks, starting with the behavior_example and 10-min notebooks |
| Matt Jensen | 1277 | Update Jupyter Notebooks to demonstrate the latest Python API |
| Matt Jensen | 1278 | Enable the charitable givings elasticity to vary by AGI bin |
| Zach Risher | 1179, 1285 | Introduce records_variables.json, a single source of truth for records variables |

| Contributor | PR | Description |
| :-- | :-- | :-- |
| Anderson Frailey | 1235 | Add ability to calculate, and possibly tax, UBI benefits |
| Anderson Frailey | 1247 | Add additional deduction and credit haircut policy parameters |
| Matt Jensen | 1247 | Add constant charitable giving elasticities to behavioral response |
| Anderson Frailey | 1252 | Add another credit haircut policy parameter |
| Martin Holmer | 1253 | Make Tax-Calculator CLI an entry point to the taxcalc package |
| Martin Holmer | 1258 | Add --tables option to Tax-Calculator CLI |