Releases to package repositories

[MatthewFlamm]

It would be easier to use for users if they could pip install pyopmspe11 from the PyPI repository. This also makes it easier to get a specific released version compared to the git based options [related to #86]. Other options to consider are conda (related to #79) through conda-forge.

Related to openjournals/joss-reviews#7357

[daavid00]

Thanks @MatthewFlamm for this suggestion. After merging #95, which was also your feedback and very useful, then now we have extended the documentation in the Python installation to explain how one can install a specific release of this repository (https://opm.github.io/pyopmspe11/installation.html#python-package). We also mentioned that package managers such as Anaconda are not tested. Then, @totto82 and I we believe that with the provided documentation the installation of this repository could be achieved, and it is not planned to make package versions of this repository for now.

[MatthewFlamm]

I don't think this issue is necessarily closed, but the changes are sufficient for purposes of openjournals/joss-reviews#7357.