This used to be valid code:
```
class Foo {
constructor() {
this.bar = ‘string’;
}
}
```
This will now fail since ‘bar’ is not explicitly
defined as a field. We now have to write:
```
class Foo {
bar:string; // << REQUIRED
constructor() {
this.bar = ‘string’;
}
}
```
Adds `benchmarks/benchpress` module and adjusts the compiler
benchmarks to use it. Also adds the Angular 1.3 benchmark
to the compiler benchmarks.
Closes#202
