changelog entry for 22106

changes/feature22106

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+  o Major features (security, stability, experimental):
+
+    - Tor now has the optional ability to include modules written in
+      Rust.  To turn this on, pass the "--enable-rust" flag to the
+      configure script.
+
+      It's not time to get excited yet: currently, there is no actual
+      Rust functionality beyond some simple glue code, and a notice at
+      startup to tell you that Rust is running. Still, we hope that
+      programmers and packagers will try building with rust
+      support, so that we can find issues with the build system,
+      and solve portability issues. Closes ticket 22106.