* Add spend credential endpoint to coconut bandwidth contract
* Store spent credentials support
* Add query endpoint for spent credentials
* Proposals allowed only from special (contract) address
* Include check for admin in tests
* Create proposal from CBC
* Refactor into coconut integration tests
* Create proposal with spend credential integration test
* Resolve mixnet warnings
* Refactor to re-enable build
* Call CBC from gateway and remove validator-api workaround
* Include migration for the first deployment of multisig
* Fix bug in proposal id parsing
* Remove more validator-api create proposal code
* Check for InProgress status of credential
* Check the proposed voucher value
* Unwrapping cosmos msg from gateway
* Improve error message
* More nit fixing
* Test getting validator api cosmos address endpoint
* Refactor to prepare for distributed comm channel
* Refactor coconut e2e test for reuse
* Verification of cred endpoint test
* Update CHANGELOG
* Temporarily point cosmrs to PR branch
* Expose grant allowance in client
* Move functions in coconut verifier
* Do execute from gateway
* Explicit fee payment by granter
* Include revoke grant after finishing with the op
* Gateway checks the proposal content before proceeding
* Clippy fixes
* CHANGELOG update
* Move coconut validator api req out of coconut interface
and expose a new cosmos-address endpoint
* Finish cosmos address endpoint
* Guard under coconut feature gateway & validator-api code
* Update CHANGELOG
Bogdan-Ștefan Neacşu