v2.1.0

Bug Fixes

• core: better condition for useClass and useExisting (da5dc49)

Features

• deprecate forRoot and forRootAsync (5b2db23)
• dependabot: add dependabot config (ca6225a)
• package: add prettier-package-json (b1c8e93)
• package: upgrade all packages (97eb451)
• package: upgrade rollup and babel (ae2b433)