What's Changed
* chore: omit edge rank label when rank==0 by wey-gu in https://github.com/wey-gu/jupyter_nebulagraph/pull/56
* opt: better dataframe rendering by wey-gu in https://github.com/wey-gu/jupyter_nebulagraph/pull/58
**Full Changelog**: https://github.com/wey-gu/jupyter_nebulagraph/compare/0.12.1...0.12.2