* Standardisation of Public Keys in Schema entities. (#68)
* Standardisation in usage of Public Keys in Schema entities.
Use PK Hash where optimal, otherwise use ByteArray/LOB representation of PK.
* Redundant after rebase.
* Use .encoded and Crypto.decode<Public|Private>Key(bytes) instead of Corda serialization.
* Optimize DBPartyAndCertificate entity to store and query on ownerKeyHash.
* Updated API stability check for schema attribute change.
* Enhance the API Scanner plugin to monitor class annotations.
* Implement @DoNotImplement annotation, and apply it.
* Update API definition.
* Update API change detection to handle @DoNotImplement.
* Document the `@DoNotImplement` annotation.
* Ensure that contents of OpaqueBytes cannot be modified.
* Update documentation and restore the signature verification check.
* Update the API definition.
* KDoc fixes.
* Update the changelog for v1.1.
* Scan API for addition of new abstract methods.
* Make sure we ignore blank lines when counting API changes.
* Add 6 new abstract APIs to our API definition.
