Move black holes to future additions

I'm not sure, if you just wanted to move the block with a slightly different wording or if this is a proposal for a solution. If it's the later: this still results in a global blackout.

1. You don't know what you don't know. Basically this includes *any* transaction that is not a valid Mastercoin transaction. (!)

2. Unrelated to the first issue: hiding incoming tokens is not sufficient. The prime example here is DEx activity. Say there is a sell intent transaction which your wallet identifies correctly, but a higher versioned accept/buy transaction which it doesn't identify. The buyer's purchase is zero'd anyway, given the higher versiond transaction, but what about the seller? Maybe the whole amount was bought, maybe not. Thus you'd need to blackout the seller, too.