### TODO

### PonchonSavarit 1.0.0 (2023-05-03)
* Main functions' parameters typed
* stages modified to accept any combination
  of two parameters among the feed quality,
  the reflux ratio at the top of the column or
  the reflux ratio at the bottom of the column
* New functions qS2R and RS2q

### PonchonSavarit 0.1.2 (2023-04-09)
* Minor changes on docstrings

### PonchonSavarit 0.1.1 (2022-10-20)
* Major changes on functions
* Minor changes on docstrings

### PonchonSavarit 0.1.0 (2022-10-18)
* First release
* Package under construction
