Release 2.9.0

🚀 Enhancement

• #1269 Re-export hasEmberVersion (and its type) from @ember/test-helpers (@gitKrystan)
• #1278 perf: Remove excessive destroy call (@runspired)
• #1234 Introduce public TypeScript support (@chriskrycho)

🐛 Bug Fix

• #1277 Actually publish .d.ts (@gitKrystan)
• #1270 Fix typesVersions path (@gitKrystan)
• #1233 Add more keyCode mappings (@CvX)

📝 Documentation

• #1259 DOCS: API: publish docs for tab (@geneukum)

Committers: 5

• Chris Krycho (@chriskrycho)
• Chris Thoburn (@runspired)
• Geordan Neukum (@geneukum)
• Jarek Radosz (@CvX)
• Krystan HuffMenne (@gitKrystan)