Match Qwen Unicode number token boundaries

docs/issue111-tokenizer/bundle.log

@@ -0,0 +1,8 @@
+cargo build --release --all-targets --all-features
+   Compiling ds4-server v0.1.0 (/Users/gb/Projects/DS4Server)
+    Finished `release` profile [optimized] target(s) in 38.38s
+warning: the following packages contain code that will be rejected by a future version of Rust: block v0.1.6
+note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
+cargo packager --release --formats app
+codesign --force --deep --sign - --timestamp=none target/release/DS4Server.app
+target/release/DS4Server.app: replacing existing signature