docs: add release notes

docs/release-notes/release-notes-0.19.0.md

@@ -48,12 +48,20 @@
   `BumpForceCloseFee` which moves the functionality soley available in the
   `lncli` to LND hence making it more universal.
 
+* [The `walletrpc.FundPsbt` RPC method now has an option to specify the fee as
+  `sat_per_kw` which allows for more precise
+  fees](https://github.com/lightningnetwork/lnd/pull/9013).
+
 ## lncli Additions
 
 * [A pre-generated macaroon root key can now be specified in `lncli create` and
   `lncli createwatchonly`](https://github.com/lightningnetwork/lnd/pull/9172) to
   allow for deterministic macaroon generation.
 
+* [The `lncli wallet fundpsbt` sub command now has a `--sat_per_kw` flag to
+  specify more precise fee
+  rates](https://github.com/lightningnetwork/lnd/pull/9013).
+
 # Improvements
 ## Functional Updates
 
@@ -145,4 +153,4 @@
 * Elle Mouton
 * Pins
 * Viktor Tigerström
-* Ziggie
+* Ziggie