defmt changelog and all-feature CI

Author: avlec

.github/workflows/ci.yml

@@ -40,9 +40,9 @@ jobs:
       - uses: actions-rs/cargo@v1
         with:
           command: build
-          args: --target=${{ matrix.TARGET }}
+          args: --target=${{ matrix.TARGET }} --all-features
       - uses: actions-rs/cargo@v1
         if: ${{ contains(matrix.TARGET, 'x86_64') }}
         with:
           command: test
-          args: --target=${{ matrix.TARGET }}
+          args: --target=${{ matrix.TARGET }} --all-features

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Added 
+
+- Support for optional package `defmt` which allows for easy conversion for
+error types when using tools like `probe-rs` for logging over debuggers.
+
 ## [v0.5.1] - 2023-07-26
 
 ### Added