chore: prepare release 0.9.0

CHANGELOG.md

@@ -1,3 +1,34 @@
+## 0.9.0 (2024-12-21)
+
+### Breaking Changes
+
+#### Support V2 Hardfork
+
+The V2 hardfork is scheduled to modernize Sia's consensus protocol, which has been untouched since Sia's mainnet launch back in 2014, and improve accessibility of the storage network. To ensure a smooth transition from V1, it will be executed in two phases. Additional documentation on upgrading will be released in the near future.
+
+##### V2 Highlights
+- Drastically reduces blockchain size on disk
+- Improves UTXO spend policies - including HTLC support for Atomic Swaps
+- More efficient contract renewals - reducing lock up requirements for hosts and renters
+- Improved transfer speeds - enables hot storage
+
+##### Phase 1 - Allow Height
+- **Activation Height:** `513400` (March 10th, 2025)
+- **New Features:** V2 transactions, contracts, and RHP4
+- **V1 Support:** Both V1 and V2 will be supported during this phase
+- **Purpose:** This period gives time for integrators to transition from V1 to V2
+- **Requirements:** Users will need to update to support the hardfork before this block height
+
+##### Phase 2 - Require Height
+- **Activation Height:** `526000` (June 6th, 2025)
+- **New Features:** The consensus database can be trimmed to only store the Merkle proofs
+- **V1 Support:** V1 will be disabled, including RHP2 and RHP3. Only V2 transactions will be accepted
+- **Requirements:** Developers will need to update their apps to support V2 transactions and RHP4 before this block height
+
+### Fixes
+
+- Fix panic when resyncing after consensus database is deleted
+
 ## 0.8.0
 
 This is the first stable release for the walletd app -- the new reference wallet for users and exchanges

go.mod

@@ -1,4 +1,4 @@
-module go.sia.tech/walletd
+module go.sia.tech/walletd // v0.9.0
 
 go 1.23.1