This tag can be used to as reference for the proxtoolbox as it was used in 2019 and early 2020.
It gives the code before a restructuring of the package due to Sylvain Gretchko and additional changes by Matthijs.

In particular, this version shows the status of the code as it was used for Jansen, Luke, et al. New Journal of Physics 2020
This tag has no release notes.