6.0.0
chore: merge v6
Merge remote-tracking branch 'origin/v6' into feat-matrix-enhance
fix: update styles
refact: put all core modules in the core dir. only do export in lib/echarts
chore: add legendPlain. the original legend contains scrollable
fix(legend): return allSelectedMap rather than selectedMap
fix(type): optimize types for dts bundling
refact: make components installable