Add more command flags
What's Changed
- release instructions by @shrimalmadhur in #314
- Add more command flags by @irisZhangCB in #312
- Add command flag for result file by @irisZhangCB in #317
- Bump version by @irisZhangCB in #318
- Add datadir to Command param by @irisZhangCB in #320
Full Changelog: v0.7.7...v0.7.8