This release is mostly a cleanup from the November hardfork. It hardcodes some of the difficulty adjustment parameters rather than calculating them on the fly. It also updates the checkpoints and fastsync utxo set. Finally it fixes a bug in the compact blocks code that was causing problems when connecting two bchd nodes together.
Note we recommend deleting the peers.json file found at .bchd/data/mainnet/peers.json before restarting as it might contain a number of ABC nodes that can make getting a good connection to the BCH network more difficult.