1. rewrite of the Haven variation of the Pricing Record class to support:
- versioning of the PR format
- nested supply_data and asset_data structs
- verification of the signature using a variable-length string (not R+S)
2. calculation of the slippage tallies for a block in add_block(), so that
we can work out the yield that is due to be paid out for the block.
Loads of little fixes and cleanups.
1. The CONVERT TX is creating the necessary information.
2. The PROTOCOL TX is creating the necessary information.
3. The wallet recognises the subaddress (kind of) on incoming amounts.
At present, the PROTOCOL TX outputs are NOT spendable or included in balances.
Some Random Crypto Guy