Import Debian changes 4.99.4+dfsg-2

.builds/netbsd.yml

.builds/openbsd.yml

.circleci/config.yml

.cirrus.yml

.ck00MAN

.clang-format

.github/ISSUE_TEMPLATE/bug_report.md

.github/ISSUE_TEMPLATE/feature_request.md

.github/workflows/build.yml

.gitignore

.readthedocs.yaml

.travis.yml

00CREDITS

00DCACHE

00DIALECTS

00DIST

00FAQ

00MANIFEST

00PORTING

00QUICKSTART