This release breaks the Policy API by moving each policy (Poll, Server, and P2P) into their own packages, consistent with the other APIs.
This release also introduces the -tags no_json build tag, which removes all dependencies on encoding/json and also disables the importers and exporters for nodes. encoding/json is still pulled in by math/big and the time library.
All nodes now have an Import and Export command, when no_json is not enabled.