v2.8.2
Chore: update build script (#15267)
chore: hide demo description when it's empty (#15014)
chore : update build config (#14821)
fix eslint error in gen-single-config.js
update release scripts
chore: use cli to select release version (#14354)
Chore: speeding up webpack (#14484)
chore: Add hmr (#15221)