0.99.2

Changed

• The default constitution no longer contains set_service_principal or remove_service_principal since they are not used by the core framework. Instead any apps which wish to use these tables should add them to their own constitution. A sample implementation is available, and used in the CI tests.
• Proposal status now includes a final_votes and vote_failures map, recording the outcome of each vote per member. failure_reason and failure_trace have been consolidated into a single failure object, which is also used for vote_failures.