2.14.0
tests: Replace assertRaisesRegexp() with assertRaisesRegex()
Add tests for new ModulemdBuildopts arches attribute
Tests: Decrease number of license identifiers
Reformat python code with black
Correct some typographical errors.
Add modulemd-obsoletes to modulemd-module
Add support for stripping XMD from an Index
tests: Replace assertEquals() with assertEqual()
tests: Fix and execute Obsoletes Python tests