Merge branch 'release/0.2.1' into develop
Integrate with savannadb#1
Support latest savanna_commons
Refactor notify-fun
Update readme in order to provide a sample code of the latest version
Convert data-type of a value
Bump savanna_commons to 0.6.3
Update for v0.2.2
Bump savanna_agent to 0.2.2
Merge branch 'release/0.2.2'