readme update

README.md

@@ -4,9 +4,9 @@ You need to use the correct branch of `c2ffi` for your version of
 LLVM/Clang:
 
 * Anything earlier: *unsupported*
-* 14.0.0: branch `llvm-14.0.0` *deprecated*
-* 15.0.0: branch `llvm-15.0.0` *old*
-* 16.0.6: branch `llvm-16.0.0` *current*
+* 15.0.0: branch `llvm-15.0.0` *deprecated*
+* 16.0.6: branch `llvm-16.0.0` *old*
+* 17.0.6: branch `llvm-17.0.0` *current*
 
 Developement will always take place in `llvm-X.Y`, according to the
 appropriate version of LLVM.  **The *master* branch has been
@@ -328,6 +328,7 @@ Special thanks:
 * [Jarhmander](https://github.com/Jarhmander) for version updates.
 * [Simon Kissane](https://github.com/skissane) for a number of features.
 * [spaceotter](https://github.com/spaceotter) for implementing real clang header paths.
+* [hjudt](https://github.com/hjudt) for the llvm-17 update.
 
 ## License