From 570beee346172500eb910bd8385c36d133260308 Mon Sep 17 00:00:00 2001
From: Stephen Waits <steve@waits.net>
Date: Mon, 4 May 2026 19:40:02 -0600
Subject: [PATCH] docs(readme): mention the optional `parallel` feature

Add the rayon feature to the install snippet alongside `serde` so
users discover it from the README.
---
 README.md | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index a0d4d00..9dab3ca 100644
--- a/README.md
+++ b/README.md
@@ -15,8 +15,11 @@ framework concepts.
 [dependencies]
 heuropt = "0.1"
 
-# Optional: derive serde::{Serialize, Deserialize} on the core data types.
-# heuropt = { version = "0.1", features = ["serde"] }
+# Optional features:
+# - "serde":     derive Serialize/Deserialize on the core data types.
+# - "parallel":  evaluate populations across rayon's thread pool.
+#                Seeded runs stay bit-identical to serial mode.
+# heuropt = { version = "0.1", features = ["serde", "parallel"] }
 ```
 
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