fix: Highlight unicode characters in Python function and class names

Author: andrewnester

lib/ace/mode/python_highlight_rules.js

@@ -171,7 +171,7 @@ var PythonHighlightRules = function() {
             regex: "[\\]\\)\\}]"
         }, {
             token: ["keyword", "text", "entity.name.function"],
-            regex: "(def|class)(\\s+)(\\w+)"
+            regex: "(def|class)(\\s+)([\\u00BF-\\u1FFF\\u2C00-\\uD7FF\\w]+)"
          }, {
             token: "text",
             regex: "\\s+"