• BIG BREAKING CHANGES
• There is no FlChart class anymore, instead use LineChart, BarChart, and PieChart directly as a widget.
• Touch handling system is improved and for sure we have some changes, there is no touchedResultSink anymore and use touchCallback function which is added to each TouchData like (LineTouchData), read more.
• TouchTooltipData class inside LineTouchData and BarTouchData renamed to LineTouchTooltipData and BarTouchTooltipData respectively, and also TooltipItem class renamed to LineTooltipItem and BarTooltipItem.
• spots inside LineTouchResponse renamed to lineBarSpots and type changed from LineTouchedSpot to LineBarSpot.
• FlTouchNormapInput renamed to FlTouchNormalInput (fixed typo)
• added showingTooltipIndicators in LineChartData to show manually tooltips in LineChart.
• added showingIndicators in LineChartBarData to show manually indicators in LineChart.
• added showingTooltipIndicators in BarChartGroupData to show manually tooltips in BarChart.