Update ipywidgets to 7.7.0#718

pyup-bot wants to merge 1 commit intomasterFordyceLab/AcqPack:masterfrom

pyup-update-ipywidgets-6.0.0-to-7.7.0FordyceLab/AcqPack:pyup-update-ipywidgets-6.0.0-to-7.7.0Copy head branch name to clipboard