libmodulemd 2.8.2

Tagging libmodulemd 2.8.2

Stephen Gallagher (19):
 * Fix missing error return
 * Validate in the ModuleStream parent class
 * ModuleStream: Properly override names when asked to
 * Use podman instead of docker where possible
 * Use safer version of dup()
 * subdocument: match the argument name in the header
 * Fix invalid nested_error usage
 * Reformat python code with black
 * Auto-format python with black
 * Add clang_tidy autoformatter
 * Apply clang-tidy formatting
 * Alphabetize meson_options.txt
 * Travis: Add --layers=true to buildah for Dockerfile.deps
 * Travis: Add F31 as a test target
 * Travis: Run Fedora tests on aarch64
 * Separate Travis builds into stages
 * Skip clang-tidy in CI
 * Skip formatters when building RPMs
 * Update version to 2.8.2