Changes to upgrade logic... #238
Description
This is a place for us to put ideas of upgrade logic, even though we'll wait to do that...
Thought 1 - All of them requiring loading and saving the blocks. Perhaps that should happen outside of the individual upgrade methods.
Thought 2 - Then perhaps blocks should have a upgradeFrom_xxxx_to_xxx method in them if necessary and the upgrade method just calls those.
Thought 3 - We could even go through all the blocks and if they have a corresponding method call it.
I am pretty convinced of Thought 1 and 2. Thought 3 is a little inefficient (it would test every block), so right now I am thinking it is not a good idea.