v1.5.1

• Adds validators generate to generate swarm keys for a validator.
• Adds oui create as a supported command to create an OUI
• Adds a number of options to pay and validator commands to allow for air gapped wallets (thanks @deasydoesit)
• Fixes a leak where extra bytes would be left in an overwritten wallet
• Fixes an issues in htlc transaction display (thanks @PaulVMo )
• Removes the libssl dependency making the binary closer to windows ready