Add CHANGELOG entry for 0.2.1

Author: TheBlueMatt

CHANGELOG.md

@@ -1,3 +1,12 @@
+# 0.2.1 - Jan 26, 2025 - "Electrum Confirmations Logged"
+
+## Bug Fixes
+ * The presence of unconfirmed transactions no longer causes
+   `ElectrumSyncClient` to spuriously fail to sync (#4341).
+ * Many log calls related to outbound payments were corrected to include a
+   `payment_hash` field (#4342).
+
+
 # 0.2 - Dec 2, 2025 - "Natively Asynchronous Splicing"
 
 ## API Updates