Update changelog

Author: Jonas Schievink

CHANGELOG.md

@@ -2,11 +2,20 @@
 
 ## Unreleased
 
-### Changed
+### New Features
+
+- Implement `MultiwriteNorFlash` for nRF52 boards that support it ([#373]).
+- Enable GPIOTE module for nRF9160 ([#376]).
+
+### Enhancements
 
 - Unified how pins are are returned in `free` calls ([#372]).
+- Improvements to the NVMC driver ([#374]).
 
 [#372]: https://github.com/nrf-rs/nrf-hal/pull/372
+[#373]: https://github.com/nrf-rs/nrf-hal/pull/373
+[#374]: https://github.com/nrf-rs/nrf-hal/pull/374
+[#376]: https://github.com/nrf-rs/nrf-hal/pull/376
 
 ## [0.14.1]