5.6.0
chore: fix several typos
fix(map): remove preventAutoZ for map
fix: remove useless code
refact: put all core modules in the core dir. only do export in lib/echarts
chore: reuse noop function from zrender util to reduce redundant code.
ts: let to const. And add eslint rule "prefer-const".
refact(graph): use blur state instead of change opacity by manual
fix(type): optimize types for dts bundling