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• Add key to throw ValidationError in decorator (#117)
• Add failed key to error message (#121)

Fixes issue with circularity detection in show() (#108)

Improve performance by using pure guard function as the primitive type checking operation rather than exceptions (#99)

Remove reflect-metadata dependency and simplify @checked decorator code (#101)

Big thanks to @justingrant for the major contributions in this release:

• Enable Constraint to have a custom name and/or a custom static type (#78)
  • Convenience method withGuard for producing runtypes from type guards
  • BREAKING CHANGE: Constraint's args parameter moved to within options parameter (this likely does not affect many users)
• Adds TypeScript 3.5 compatibility

• Add isReadonly flag to Array and Record runtypes (#80)
• Deprecate the Void runtype (#82)

Make ValidationError public (#59)

Fix bug with @checked (#72)

Replace Always with Unknown

Add @checked decorator (#71)