Support Arduino-style labeled multi-value plotter data#487

makermelissa-piclaw wants to merge 2 commits intocircuitpython:betacircuitpython/web-editor:betafrom

makermelissa-piclaw:fix/issue-457-multi-value-labeled-plotter-datamakermelissa-piclaw/web-editor:fix/issue-457-multi-value-labeled-plotter-dataCopy head branch name to clipboard