Add release notes for the v2026.04.30 release

website/blog/2026-04-30-release.md

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+---
+slug: 2026-04-30-release
+title: v2026.04.30 Release
+authors:
+  name: Redex Team
+  title: Redex Team
+  url: https://fbredex.com
+  image_url: https://fbredex.com/img/favicon.png
+tags: [release]
+---
+
+## Optimizations
+
+This release brings several code-size and inlining improvements:
+
+- `RemoveUnreachablePass` can now sweep annotation elements (via the `sweep_annotation_elements` option). This yields a large code-size reduction for apps that cannot enable `AnnoKill`, and a modest reduction for those that do.
+- More lenient cross-store reference (`XStoreRefs`) handling when `normal_primary_dex` is enabled, improving inlining across primary and secondary dex files for apps using native multidex.
+- `ResolveRefsPass` now does a better job resolving interface references.
+
+## Other improvements
+
+- New `CompactPointerVector` container, a memory-efficient alternative to `std::vector` for storing a small number of pointers inline without heap allocation.
+- Broader use of `AtomicStatCounter` for thread-safe stats collection.
+- Partial migration from `boost::optional` to `std::optional`.
+- Systematic include cleanup and const-correctness improvements across the codebase.