- Tags with `@lends` are now filtered out early on, so they never
generate documentation. Lends tags are structural hints only.
- Uses built-in type checks instead of babel-types where appropriate.
- More internal documentation
- Now reuses code for parsing lends between different forms
Previously broken syntax, now working:
```js
/** parent */
export default function() {
/** child */
this.a = 1;
}
```
