fix: don't disallow additional properties by default

Author: andy.patterson

src/index.ts

@@ -61,7 +61,6 @@ export default class Validator<T> {
         return new Validator<ObjectValidator<O, OptionalKeys>>({
             type: 'object',
             properties,
-            additionalProperties: false,
             required,
         });
     }

tests/integration/api.test.ts

@@ -26,7 +26,6 @@ test('Can generate a valid json schema', () => {
             thing3: { type: 'boolean' },
             thing4: { type: 'string' as 'string' },
         },
-        additionalProperties: false,
         required: ['thing', 'thing2', 'thing3', 'thing4'],
     };