• IMPROVEMENT Fix order of drawing lineChart bar indicator problem, #198.
• FEATURE Add isStrokeJoinRound property in LineChartBarData.
• IMPROVEMENT Upgrade to Flutter 3, #997.
• FEATURE Add chartRendererKey property to the LineChart, BarChart, and ScatterChart. We pass it directly to our chart renderers that are responsible to render the chart itself (without anything around it like titles), #987.