release: Add changes since v0.9.0rc3 to changelog

Author: cdecker

CHANGELOG.md

@@ -5,7 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
-## [0.9.0rc3] - 2020-07-24
+## [0.9.0rc4] - 2020-07-28
 
 ### Added
 
@@ -31,6 +31,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  - plugin: New `invoice_creation` plugin event ([3658](https://github.com/ElementsProject/lightning/pull/3658))
  - docs: Install documentation now has information about building for Alpine linux ([3660](https://github.com/ElementsProject/lightning/pull/3660))
  - plugin: Plugins can opt out of having an RPC connection automatically initialized on startup. ([3857](https://github.com/ElementsProject/lightning/pull/3857))
+ - JSON-RPC: `sendonion` has a new optional `bolt11` argument for when it's used to pay an invoice. ([3878](https://github.com/ElementsProject/lightning/pull/3878))
+ - JSON-RPC: `sendonion` has a new optional `msatoshi` that is used to annotate the payment with the amount received by the destination. ([3878](https://github.com/ElementsProject/lightning/pull/3881))
 
 ### Changed
 
@@ -783,7 +785,7 @@ There predate the BOLT specifications, and are only of vague historic interest:
 6. [0.5.1] - 2016-10-21
 7. [0.5.2] - 2016-11-21: "Bitcoin Savings & Trust Daily Interest II"
 
-[0.9.0rc3]: https://github.com/ElementsProject/lightning/releases/tag/v0.9.0rc3
+[0.9.0rc4]: https://github.com/ElementsProject/lightning/releases/tag/v0.9.0rc4
 [0.8.2]: https://github.com/ElementsProject/lightning/releases/tag/v0.8.2
 [0.8.1]: https://github.com/ElementsProject/lightning/releases/tag/v0.8.1
 [0.8.0]: https://github.com/ElementsProject/lightning/releases/tag/v0.8.0