This code does not assume the new previous ledger is valid
or trusted.
1) Validate sequence numbers and basic information.
2) Create a new ledger based on the new previous ledger.
3) Compare the old previous ledger and the new previous
ledger.
4) Try to include any missing, valid transactions in
the current ledger.
5) Traverse the old ledger based on the old previous ledger,
try to import any transactions into the new ledger.
work with no parameters. Fix a bug where the ledger's account/txn
hashes didn't get properly synchronized to the SHA maps. Add function
to get ledger as json object.
Track whether ledger is accepted.
Assert on modifications to an accepted ledger.
Save accepted ledgers to DB.
Load ledger by hash/index.
Ledger history functions, ledger canonicalization.
'Push' ledger to history.
Raw account class (address + public key)
Account State class (account + balance + ledgers valid)
Raw Hanko class
Low-level tranasaction class
Small wallet and key bits
Misc updates to the protocol.
Protocol addition to allow code to wait for replies, but that may not be a good idea.
