Add changelog entries

Author: saulshanabrook

docs/changelog.md

@@ -14,6 +14,16 @@ _This project uses semantic versioning_
 - Use `add_note` for exception to add more context, instead of raising a new exception, to make it easier to debug.
 - Add conversions from generic types to be supported at runtime and typing level (so can go from `(1, 2, 3)` to `TupleInt`)
 - Open files with webbrowser instead of internal graphviz util for better support
+- Add support for not visualizing when using `.saturate()` method [#254](https://github.com/egraphs-good/egglog-python/pull/254)
+- Upgrade [egglog](https://github.com/egraphs-good/egglog/compare/b0db06832264c9b22694bd3de2bdacd55bbe9e32...saulshanabrook:egg-smol:889ca7635368d7e382e16a93b2883aba82f1078f)
+  - This includes a few big changes to the underlying bindings, which I won't go over in full detail here. See the [pyi diff](https://github.com/egraphs-good/egglog-python/pull/258/files#diff-f34a5dd5d6568cd258ed9f786e5abce03df5ee95d356ea9e1b1b39e3505e5d62) for all public changes.
+  - Creates seperate parent classes for `BuiltinExpr` vs `Expr` (aka eqsort aka user defined expressions). This is to
+    allow us statically to differentiate between the two, to be more precise about what behavior is allowed. For example,
+    `union` can only take `Expr` and not `BuiltinExpr`.
+  - Removes deprecated support for modules and building functions off of the e-egraph.
+  - Updates function constructor to remove `default` and `on_merge`. You also can't set a `cost` when you use a `merge`
+    function or return a primitive.
+  - `eq` now only takes two args, instead of being able to compare any number of values.
 
 ## 8.0.1 (2024-10-24)