megaplot.py incompatible with setuptools >= v58.3
In the installation process, the easy_install command (for installed python eggs) was removed in setuptools v58.3 (year 2021), so eggs can no longer be used after this version. In my installation, I had to downgrade to setuptools==57 for the installation of megaplot.py to work. I guess that python eggs will need to be replaced by e.g. pip, so that bayeswave will not remain bound to setuptools<=57.