Add missing dot files

.coverageac

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+[run]
+omit = test_*.py
+       __init__.py
+branch = True
+dynamic_context = test_function
+
+[report]
+skip_covered = False
+fail_under = 99
+show_missing = True
+
+[html]
+directory = tests/htmlcov
+title = GenConfig Coverage Report
+show_contexts = True
+
+[xml]
+output = tests/coverage.xml
+
+[json]
+output = tests/coverage.json
+pretty_print = True
+show_contexts = True

.gitignore

@@ -0,0 +1,23 @@
+
+# Python cache files.
+*.pyc
+.pytest_cache/
+.spyproject
+
+# Virtual environment
+env/
+
+# Ben's Sublime files.
+sftp-config.json
+
+# Test code scratch output directories.
+actual_output/
+
+# Jupyter checkpoints
+.ipynb_checkpoints/
+
+# pytest-cov data
+.coverage
+
+# test data output
+**/test/data/output/