Metrics-gen

update list object to List of typing to support python 3.7 in https://github.com/mlrun/metrics-gen/pull/7
bump version to 0.2.2 by aviaIguazio

fix list bug metrics_generator.py by aviaIguazio in https://github.com/mlrun/metrics-gen/pull/5
bump version to 0.2.1 by aviaIguazio in https://github.com/mlrun/metrics-gen/pull/6

What's Changed
* Update metrics_generator.py by aviaIguazio in https://github.com/mlrun/metrics-gen/pull/2
* [CI] Deploy to pypi upon create release by liranbg in https://github.com/mlrun/metrics-gen/pull/3
* [CI] Run test upon PR by liranbg in https://github.com/mlrun/metrics-gen/pull/4

New Contributors
* aviaIguazio made their first contribution in https://github.com/mlrun/metrics-gen/pull/2
* liranbg made their first contribution in https://github.com/mlrun/metrics-gen/pull/3

**Full Changelog**: https://github.com/mlrun/metrics-gen/commits/0.0.2