History

0.2.1 (2019-03-31)

Updated dependencies and supported Python versions.

0.2.0 (2018-06-24)

on error: optional function to be called if any of the environment tokens in value is not present in environment
in self: optional variable name in case instance property is to be initialized
package slightly restructured

0.1.0 (2018-06-12)

First release on PyPI.