Lazy Bloom filter, built on connection
Headers-only mode
Removed FCU cap at fork timestamp (source?)
Fixed WSStoredBlock NSCoder serialization

Work property needs manual conversion.
Checkpoints serialization test/tool
Bundle serialized checkpoints
Fixed broken test by version string upgrade

0.1 -> 0.2
Fixed broken test by generation logic fix

No more look-ahead in generateAddressesIfNeeded.
Removed WSCheckpoint class, use WSStorableBlock