Provide environment variables for config options (closes #161)

Change-Id: Iacb5902f4206fbf0a7a5bd6979aae4fe7a3be914
diff --git a/Changes b/Changes
index 30d50bc..42d6bb0 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,6 @@
+    - Support environment variables overriding configuration properties.
+      (closes #161)(diewald)
+
 0.3.3 2026-01-29
     - Introduce announcements (diewald)