Prep subxt-historic 0.0.7 release: expose ClientAtBlock bits (#2138)

historic/CHANGELOG.md

@@ -4,6 +4,24 @@ This is separate from the Subxt changelog as subxt-historic is currently releasa
 
 Eventually this project will merge with Subxt and no longer exist, but until then it's being maintained and updated where needed.
 
+## 0.0.7 (2025-12-03)
+
+Expose `OfflineClientAtBlock`, `OfflineClientAtBlockT`, `OnlinelientAtBlock`, `OnlineClientAtBlockT`.
+
+This is so that you can pass the `ClientAtBlock` into functions like so:
+
+```rust
+use subxt_historic::config::Config;
+use subxt_historic::client::{ ClientAtBlock, OnlineClientAtBlock, OnlineClientAtBlockT };
+
+fn accepts_client_at_block_concrete<T: Config>(client: &ClientAtBlock<OnlineClientAtBlock<'_, T>, T>) {
+    // ...
+}
+fn accepts_client_at_block_generic<'conf, T: Config + 'conf, C: OnlineClientAtBlockT<'conf, T>>(client: &ClientAtBlock<C, T>) {
+    // ...
+}
+```
+
 ## 0.0.6 (2025-12-01)
 
 - Add `.metadata()` on `ClientAtBlock` to expose the current metadata at some block.