*https://github.com/snowblossomcoin/snowblossom/compare/640cf9eb84c0...7c17e8dbe59f* https://github.com/snowblossomcoin/snowblossom/commit/7c17e8dbe59f7ecefebc31a0fea939c4b8c91e41 - Update to most recent proto rules which allows building with bazel 0.27.0