Merge branch 'release/0.6.0' into develop
Add an element in a messagem, which is schema-name
Improve the core functions
Optimize whole functions
Update require_otp_vsn
Implement that an end datetime of a sampling adjusts a step
Update the changelog for v0.6.1
Bump savanna_commons to 0.6.1
Merge branch 'release/0.6.1'