Additions
- Deep array indexing ([88](https://github.com/ron-rs/ron/pull/88))
- Pretty sequence indexing ([86](https://github.com/ron-rs/ron/pull/86))
- Add unicode support for chars ([80](https://github.com/ron-rs/ron/pull/80))
- Add support for hex, oct and bin numbers ([78](https://github.com/ron-rs/ron/pull/78))
- Allow implicit Some ([75](https://github.com/ron-rs/ron/pull/75))
- Add grammar specification ([73](https://github.com/ron-rs/ron/pull/73))
- Add extension support and first extension, unwrap_newtypes ([72](https://github.com/ron-rs/ron/pull/72))
Fixes
- Directly serialize `f32` ([81](https://github.com/ron-rs/ron/pull/81))