What's Changed
* Update `set_experiment` by daizutabi in https://github.com/daizutabi/hydraflow/pull/28
* Add methods to `RunCollection` by daizutabi in https://github.com/daizutabi/hydraflow/pull/29
* Add `start_run` by daizutabi in https://github.com/daizutabi/hydraflow/pull/30
**Full Changelog**: https://github.com/daizutabi/hydraflow/compare/0.2.3...0.2.4