New Features legend: 添加图例的正反选功能 (#3756) (2c92f5d8) Bug Fixes scrollbar: Scale option tickMethod doesn't work when enable scrollbar (#3747) (cb3ad042) Performance Improvements 优化性能，由于set-zindex每次都会调用 sort，导致耗时为指数级别的 (#3758) (f2877bcf)
