1. update to d3.v6 (now npm installed) 2. replaced 1.5 sec wait before centering vis for waiting until the interactions addition force layout simulation is stable; added pre-centering when semi-stable state reached; added reporting in user UI when simulation is still stabilizing 3. improved zooming and menu display controls 4. added nvmrc file 5. improved displayed tooltips for menu options 6. more modern tsconfig.json configs and split webpack configs for building component and plugin