v0.12.1-bitcore-4

• Adds a new RPC method getblockdeltas that will return a block object with all address changes made within the block. #23
• Optionally will give back chain information, block hash and height, in the response from the getaddressutxos and getaddressdeltas methods. #31

Gitian build signatures are available at: https://github.com/bitpay/gitian.sigs