Add pyveu link

README.md

@@ -637,6 +637,7 @@ laboratories. Here is a list of online resources, which might be useful.
  - [Numpy and Scipy](https://docs.scipy.org/doc/) documentation
  - [Pandas](https://pandas.pydata.org/) documentation
  - [Matplotlib](http://matplotlib.org/contents.html) documentation
+ - [pyveu](https://gitlab.sauerburger.com/frank/pyveu) handles units and uncertainties
  - [Orthogonal distance regression](https://docs.scipy.org/doc/scipy/reference/odr.html) - least square fit, which considers
    uncertainties in $`x`$ and $`y`$ directions.
  - Histograms in