* Update assertTrue/False to Python 3 precise asserts
* Fix test failures
* Fix test failures
* More replacements
* Update to Python 3 asserts in acme-module
* Fix Windows test failure
* Fix failures
* Fix test failure
* More replacements
* Don't include the semgrep rules
* Fix test failure
* Move acme tests to tests/ directory outside of acme module
* Fix call to messages_test in client_test
* Move test_util.py and testdata/ into tests/
* Update manifest to package tests
* Exclude pycache and .py[cod]