Document 2.2.0: version labels for the new charts and options
Document vNEXT: marimekko, chord, battery grid, spiral, strip plot and cycle plot charts, the badge, line chart forecasts, anomalies, earlier spans, now line, conditions and legend toggles, column error bars and Energy dashboard source, gauge recent range, transforms, unit conversion and export
Document 2.0.0: every new chart, line chart extras, gauge angles and centre text; 1.4 and 1.5 pages now read v2.0.0