Changed
- Replace `parse_<name>_maybe_json` funcs with `<name>MaybeJsonParsed` classes. Also fix bugs with parsing mixed responses. [(14)](https://github.com/kevinheavey/
- Make `batch_from_json` pure Rust instead of relying on the Python `from_json` method. [(14)](https://github.com/kevinheavey/solders/pull/14)