types: Add unreleased changelog note

tcharding · tcharding · commit f5e3a17caaca · 2024-11-26T10:10:46.000+11:00
Quick patch to test CI is working after all the code move.

Add an unreleased section to the changelog.
diff --git a/types/CHANGELOG.md b/types/CHANGELOG.md
@@ -1,3 +1,8 @@
+# Unreleased
+
+- Flesh out v17 and v18.
+- Rename `corepc-node::BitcoinD` to `Node`.
+
 # 0.4.0 - 2024-11-14
 
 - Add support for Bitcoin Core v28
