(I was originally planned to add dataType in click event, but finally modified quite a few files. Did I go too far?)
Add `dataType` to data and `getFormattedLabel` `getDataParams` `graphicEl`.
Enable series to maintain multiple datas (ig: in GraphSeries and SankeySeries).
Enable multiple datas sync when restoreData without trick in Graph.js.
Enable tooltip and click of edgeData without creating special dataModel.