Release Notes: As illustrated by the live demo's "LayZLine Chart Editor", the new getMouseCoordinate method can be used to add points to a chart at the position where the user clicked. The closely related clientToModel and modelToClient methods let you convert between client-window pixel coordinates and the model coordinates associated with any chart axis. There's also a method to change GChart's default curve colors. Several bugs were fixed.
Release Notes: For easier time series charting, the standard GWT DateTimeFormat pattern syntax (e.g. dd/MM/yyyy HH:mm) is now supported in tick label format strings. For details and examples, see the setTickLabelFormat method's Javadocs.