SpaceJam 0.6.7-pre.1

SpaceJam binaries matches graypaper 0.6.7 which basically passed all default test vectors

Changes

• Refactor the fork handlers in network
• Accounts storage deposit offset and additional metadata
  • Add creation_slot, last_accumulation_slot and parent_service to service account
• Use sequence for core assignment privileges
• Reindex the host calls
• State Merkilization
  • update storage encoding
  • update account info encoding
• Split MMR from recent blocks
• Update storage key encoding
• Merge storage ops
• Update the fuzz command