Note licensing change since 1.7.1 in README

Versions up to and including 1.7.1 remain under LGPL-2.1; later
versions use the new dual-license (PolyForm Noncommercial + commercial EULA).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: tkausch

README.md

@@ -198,6 +198,8 @@ We welcome contributions of all sizes. Read `CONTRIBUTING.md` for setup instruct
 
 ## License
 
+> **Note:** Licensing changed after version 1.7.1. Versions up to and including 1.7.1 remain available under the LGPL-2.1; versions after 1.7.1 are dual-licensed as described below.
+
 SwiftRestRequests is dual-licensed:
 
 - **[PolyForm Noncommercial License 1.0.0](LICENSE)** — free to use, modify, and distribute for any noncommercial purpose.