Changes
- Port-reachable checks for private rpc ports now performed correctly (fixes regression in v1.3.12 that kept validator from booting).
- Various helpers and utilities for offline signing are now more easily accessible outside the CLI.
- Validators now timestamp every vote, and block times are cached for every confirmed block, making block time available for every block going forward.
- Transaction and block performance is now sampled and exposed via RPC.
- Supports current spl-token crate.
- Eases AppendVecs-related lock contention.