* added `token_step` to `align()` ([ac3b38c](https://github.com/jianfch/stable-ts/commit/ac3b38ccd5d5cc28326a754c8137c4b6ec7bd1d1))
* delete `_demo` directory ([b592731](https://github.com/jianfch/stable-ts/commit/b592731d4b5241618fd9f30496037daa0a724f6e))
* fixed [205](https://github.com/jianfch/stable-ts/issues/205) ([ac3b38c](https://github.com/jianfch/stable-ts/commit/ac3b38ccd5d5cc28326a754c8137c4b6ec7bd1d1))
* updated `README.md` ([d0340ef](https://github.com/jianfch/stable-ts/commit/d0340ef34aa68285a0e4410e889069b5a9cce036), [ffa05a4](https://github.com/jianfch/stable-ts/commit/ffa05a419a45d68fb93466957d756509e65e13b4))