1. Implement a TaPoS assert operation predicate that offers full block ID
validation for transactions that want the added security. This is only
required for transactions that are of high value and transfer control of
funds to a newly created identifier and where the witnesses cannot be
trusted.
2. Remove the full block ID from the transaction digest generation.
- remove circular dependency with fee_schedule
- unitiy build db_* as database.cpp
- move protocol definitions in separate directory
- combined some objects/evaluators
- combined limit/call evaluator/objects into market_evaluator.*
- this is a major refactor of the code and may have broken some behavior
in the wallet or witness nodes.
- this commit changes the serialization of operations
- the chain_tests pass
- refactor how signatures are stored on the transaction, removing key_id
and extra_signatures maps and replacing with a vector
- verify that each key only signs one time
- update tests to handle stricter policies on signatures
