Update mpmath to 1.2.1#111

pyup-bot wants to merge 4 commits intomasterRexGalilae/vasp-tools:masterfrom

pyup-update-mpmath-1.1.0-to-1.2.1RexGalilae/vasp-tools:pyup-update-mpmath-1.1.0-to-1.2.1Copy head branch name to clipboard