• [IMPORTANT] BLACK LIVES MATTER
• [Improvement] Auto calculate interval in SideTitles and FlGridData, instead of hard coding 1, to prevent some performance issues like #101, #322. see BarChartSample4.
• [Bugfix] drawing dot on null spots
• [Bugfix] Fixed LineChart have multiple NULL spot bug.
• [Feature] added checkToShowTitle property to the SideTitles, for checking show or not show titles in the provided value, #331. see LineChartSample8.
• [Feature] Added compatibily to have customized shapes for FlDotData, just override FlDotData.etDotPainter and pass your own painter or use built-in ones, see this sample.
• [Improvement] [BREAKING] Replaced clipToBorder with clipData in LineChartData to support clipping 4 sides of a chart separately.