New chart did not have seq sub directory

[NgoHuy]

Hi @rs, When I build jplot I have error: package github.com/wcharczuk/go-chart/seq: cannot find package "github.com/wcharczuk/go-chart/seq" in any of: /usr/lib/go/src/github.com/wcharczuk/go-chart/seq (from $GOROOT) /home/dragon/go/src/github.com/wcharczuk/go-chart/seq (from $GOPATH)

The go-chart is now in v3.0, then code should upgrade to it.

Best regards, Severus