Suvtools

Reformat internal changes.

- fix: address [changes](https://numpy.org/doc/stable/release/1.23.0-notes.html#np-loadtxt-has-recieved-several-changes) to `max_rows` behavior in `numpy.loadtxt`
- requires numpy v1.23.0 or higher

- Python tests implemented for `load` and `calc_area`
- Bugfix in `calc_area`
- Load data from url
- Improvements in documentation.

In previous versions, `x_start`, `x_end`, and `x_norm_loc` positions for several modules (**calc_area, lock_peak, norm_bg**) required that the points must exist in the input `x`-array. Now if the `x_start`, `x_end`, and/or `x_norm_loc` input values does not exactly match any data point in the `x`- array, it will pick the nearest existing point.

First release of the SUV Python library.