| OLD | NEW |
| 1 ## 0.11.0 |
| 2 * Added new `Required` constructor with a means to specify a reason to explain w
hy a parameter is required. |
| 3 |
| 1 ## 0.10.0 | 4 ## 0.10.0 |
| 2 * Introduce `@factory` annotation for methods that must either be abstract or | 5 * Introduce `@factory` annotation for methods that must either be abstract or |
| 3 must return a newly allocated object. | 6 must return a newly allocated object. |
| 4 * Introduce `@literal` annotation that indicates that any invocation of a | 7 * Introduce `@literal` annotation that indicates that any invocation of a |
| 5 constructor must use the keyword `const` unless one or more of the | 8 constructor must use the keyword `const` unless one or more of the |
| 6 arguments to the constructor is not a compile-time constant. | 9 arguments to the constructor is not a compile-time constant. |
| 7 | 10 |
| 8 ## 0.9.0 | 11 ## 0.9.0 |
| 9 * Introduce `@protected` annotation for members that must only be called from | 12 * Introduce `@protected` annotation for members that must only be called from |
| 10 instance members of subclasses. | 13 instance members of subclasses. |
| 11 * Introduce `@required` annotation for optional parameters that should be treate
d | 14 * Introduce `@required` annotation for optional parameters that should be treate
d |
| 12 as required. | 15 as required. |
| 13 * Introduce `@mustCallSuper` annotation for methods that must be invoked by all | 16 * Introduce `@mustCallSuper` annotation for methods that must be invoked by all |
| 14 overriding methods. | 17 overriding methods. |
| OLD | NEW |