v5.20.0

What's Changed

• Major type definition improvements by @florian-h05 in #541
• Fix Quantity (and others) being any in generated types by @florian-h05 in #542
• Fix clients cannot resolve some types by @florian-h05 in #543
• Fix clients cannot resolve some types (2nd try) by @florian-h05 in #544
• Fix union types stripping of null in generated type defs by @florian-h05 in #545
• Upgrade TypeScript compiler from v4 to v5 by @florian-h05 in #546

Full Changelog: v5.19.0...v5.20.0