DataView and piDogScrollingCanvas available

Check out the latest! Important update if you’re using the current Xojo 2019r2.1

[All] DataViewInternals and other secondary items no longer appear in Library pane of IDE
[Bug] No longer causes stack overflow when setting usesSystemColors from ThemeChanged event
[Bug] Fixes for RowTop esp when list has 1 row
[Bug] Internal fix for Alternatng row sequencing
[All] Added DrawsFlatHeaderSeparators property to automatically draw vertical lines between header cells
[Mac] UsesAlternatingRowColors can now be changed when UsesSystemColors = true