1.15.0-alpha.1

This release includes fixes and improvements.

Breaking changes	Addressed
None	#631, #635, #638, #664

The following bugs have been resolved:

• Markers failed to be displayed for some points.
• Data labels didn’t work in ColumnCharts with MergeMode.Stacked applied.
• TextComponent could fail to apply text styling.

Additionally, the transaction parameter of ComposedChartEntryModelProducer.build and the entryCollections parameter of the ChartEntryModelProducer constructor are now nullable and have default values of null, preventing redundant updates from being run on instantiation.