Change data range of a chart

User Story

As an application developer, I want to change the data range of an existing chart and the chart can render the result upon the updated data range.

Acceptance Criteria

• Provide methods like setDataRange() on io.keikai.api.model.Chart
• After calling this API, chart can re-render itself upon the new data range.

Details

• Currently, the alternative is to delete a chart and create a new one with new data range