2.8.3

What's Changed

• Support binary contents in FileContains matcher by @jelmer in #553
• Be more lenient to stream=None being passed into TestResult classes by @jelmer in #554
• Support async setUp/tearDown validation with Deferreds by @jelmer in #552
• Bump ruff from 0.14.9 to 0.14.10 by @dependabot[bot] in #555
• Add more typing, reduce size of testtools.compat by @jelmer in #556
• Bump ruff from 0.14.10 to 0.14.11 by @dependabot[bot] in #558
• Add more typing by @jelmer in #559
• Finish typing by @jelmer in #561

Full Changelog: 2.8.2...2.8.3