Renamed BootJournalMessage to JournaledMessage; added ability for message store reader to pick up where it left off when retrying.
Ensuring that all messages are read from the database even during database failures.
Reader is now subordinate to the SqlMessageStore.
Renamed method argument.
Added various TODO items and spiked out some bootstrap handlers; stubbed out bootstrapping code.
Snapshot will now only work with strings.
SerializationHandler is now under test.
MementoHandler is now under test.