Added
- Add default RPC client commitment to token client ([187](https://github.com/michaelhly/solana-py/pull/187))
- Add cluster_api_url function ([193](https://github.com/michaelhly/solana-py/pull/193))
- Add getBlockHeight RPC method ([200](https://github.com/michaelhly/solana-py/pulls?q=is%3Apr+is%3Aclosed))
Changed
- Replace base58 library with based58 [192](https://github.com/michaelhly/solana-py/pull/192)