Allow to invoke methods by offset:
1. Every invoked contract must have manifest.
2. Check arguments count on invocation.
3. Change AppCall to a regular syscall.
4. Add test suite for `System.Contract.Call`.
Part of #1055.
We should check contract scripthash against the one provided in manifest
and manifest groups. We shouldn't put on stack anything after return.
And ofcourse, we mast not destroy the old contract at the end, as
`contractDestroy` removes all storage items associated with the
old contract ID (which equals to the new contract ID). We just remove
old contract state - it's enough.
closes#1025
Now we put on stack stackitem.Array instead of Interop, so we're able to
use all available block properties without extra interop getters.
Removed Neo.Blockchain.GetBlock interop as we don't need it anymore.
closes#1023
Now we put on stack stackitem.Array instead of Interop, so we don't
need old transaction-related interops anymore. Removed the following
interops:
System.Transaction.GetHash
Neo.Transaction.GetAttributes
Neo.Transaction.GetHash
Neo.Transaction.GetWitnesses
Neo.Attribute.GetData
Neo.Attribute.GetUsage
Also removed the following duplicated NEO interop:
Neo.Blockchain.GetTransaction
