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Released on March 02, 2020.
- Removed ``env_name`` paramter from
:class:`~settei.base.config_object_property`.
- Changed asterisk charater into ``ASTERISK``. We couldn't use special
charaters in OS environment variable name.
- Support list in environment variable.
- Allow configure value on both toml and environment variable at
the same time. Firstly settei get a configuration from toml,
then scan an environment variable.