• [Improvement] Show barGroups x value instead of index in bottom titles, #342.
• [Improvement] [BREAKING] Use double.infinity instead of double.nan for letting enterSpaceRadius be as large as possible in the (PieChartData)[https://github.com/imaNNeoFighT/fl_chart/blob/master/repo_files/documentations/pie_chart.md#piechartdata], #377.
• [Bugfix] Fixed PieChart bug with 1 section, #368.