Version 0.1.19     17 Feb 2021

	* Standardize the format of the Apache v2 statement in LICENSE.

Version 0.1.17     07 Feb 2021

	* Publish coverage data to coveralls.io in GitHub workflow.
	* Fix incorrect dependency on safety (should have been dev dependency).

Version 0.1.16     07 Feb 2021

	* Upgrade to cattrs 1.2.0 and handle related behavior changes.
	* Update build process to include security scans using Safety.
	* Make other structural improvements to the build process.

Version 0.1.15     17 Jan 2021

	* Update build system to use poetry.core.
	* Fix the GitHub test suite by adding Python version into cache id.
	* Move to newer versions of various build dependencies (black, isort, etc.).
	* Standardize on UNIX line endings in Git working copy and PyPI package.
	* Make improvements to Read the Docs integration, including a PR merge gate.
	* Clean up badges shown in documentation, so they are links to something sane.
	* Make improvements to the MyPy and Pylint configuration.
	* Move to a new two-step release process based on cedar-backup3.
	* Create a changelog for the first time, along with new release process.
	* Upgrade to latest apologies library (v0.1.29) to stay up-to-date.

