Add `group!` macro for registering external types

1 files changed, 8 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a9b6b1..f32bb60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -180,6 +180,14 @@ This macro is only available with the `extra_macros` feature.
 
 9. **\[mingling\]** Added `Groupped` trait to the `mingling::prelude` module, so it can now be imported via `use mingling::prelude::*` without needing to separately import the trait from the `mingling` crate root.
 
+10. **\[macros\]** Added the `group!` macro for registering outside-types from external crates as group members without modifying their definitions. This macro generates a `Groupped` implementation and registers the type's simple name as an enum variant.
+
+```rust,ignore
+group!(std::io::Error);
+```
+
+This macro is only available with the `extra_macros` feature.
+
 #### **BREAKING CHANGES** (API CHANGES):
 
 1. **\[core\]** Changed the signature of `ProgramSetup::setup` from `fn setup(&mut self, program: &mut Program<C>) -> S` to `fn setup(self, program: &mut Program<C>)`, consuming `self` instead of taking a mutable reference. Correspondingly, `Program::with_setup` now accepts `S` by value (`&mut self, setup: S`) instead of by mutable reference (`&mut self, setup: &mut S`).