Release v1.24.8 (fixes for API nodes).
This version fixes several API-related issues: expired proposals are no longer pruned from memory and checks were added to make block_api calls match previous behavior better.
Optimization: rebuilding of block log index file was speeded up considerably by using memory-mapped file IO.
A replay is required for upgrading from a previous version (unless you obtain a compatible snapshot).
This release is strongly recommended for API node operators because of changes in API call behavior, but it has no consensus changes (no changes needed by witness nodes) and is not a required upgrade for exchanges.