v0.18.0
=======

This minor release updates the mimumum supported python to `python = "^3.8"`, addresses dependency vulnerabilities, and updates typing to conform with current mypy and pytest standards.

Updates / New Features
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Python

* New minimum supported python changed to `python = "^3.8"`.

CI

* Updated CI unittests to reflect new minimum support `python = "^3.8"`.

Fixes
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Dependency Versions

* Updated the locked versions of dependencies to reflect new minimum
  support `python = "^3.8".