* add `{type:'button'}` only for buttons
We will try and infer the type based on the passed in `props.as` prop or
the default tag. However, when somebody uses `as={CustomComponent}` then
we don't know what it will render. Therefore we have to pass it a ref
and check if the final result is a button or not. If it is, and it
doesn't have a `type` yet, then we can set the `type` correctly.
* update changelog
Robin Malfait
c1117840fd