update README

lapla-cogito · Nov 30, 2024 · 213bd64 · 213bd64
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@@ -11,6 +11,7 @@ A hobby regular expression engine in Rust.
         - cache
     - Derivative-based engine
         - use Brzozowski's derivatives
+- all engines currently support `*`, `+`, `?`, `|`, `()`, and `\` (escape)
 
 ## example