merging this now even though circleci has some problem, python 3.8 is not possible yet because some dependencies are not updated and cause dependency conflicts. the only thing this PR changes is the updated URLs for miniconda from continuum.io to anaconda.org
merging this now even though circleci has some problem, python 3.8 is not possible yet because some dependencies are not updated and cause dependency conflicts. the only thing this PR changes is the updated URLs for miniconda from continuum.io to anaconda.org