* Add coconut verifier structure for coconut protocol in gateway
* Add endpoint for validator-api cred verification
* Remove unused signature field
* Register new endpoint
* Improve validator-api config handling
* Aggregate verif result from all apis
* Simplify aggregate functions
* Verify cred on apis correctly
* Introduced coconut bandwidth contract to validator client
* Fix rebase double import
* Fix clippy on non-coconut
* Add multisig contract address to validator client
* Refactor Credential struct
* Do bincode magic in the coconut interface
* Implement serialization for credential and remove bindcode
* Fix clippy and don't remove dkg
* Client release funds proposal
* Add wrapper for blinded serial number
Also compare theta with a blinded serial number (in base 58 form)
for future double spend protection.
* Only post blinded serial number to blockchain
* Validator api propose credential spending
* Fix wallet
* Gateway calls proposal creation
* Query for proposal in verify coconut
* Remove db from git
* Verify against proposal description
* Validator apis vote based on verification of cred
* Fix wallet fmt
* Execute the release of funds
* Fix translation between token and bytes
* Update CHANGELOG