Improve rune2symbol conversion

Change-Id: I431e8ed9f8166cbd5138a46ea5941242573ab219
diff --git a/Changes b/Changes
new file mode 100644
index 0000000..9880f32
--- /dev/null
+++ b/Changes
@@ -0,0 +1,3 @@
+0.1.2 2021-12-05
+    - Improve performance of rune to symbol conversion in transduction
+      method.