v0.8.0

Changes to consensus

• The expired domains can now be taken by new owners.
• Domains expire in two phases:
  1. After 365 days the domain will stop resolve. But the owner can renew it by mining.
  2. After 30 days more it is available to be taken by a new owner.

Bug Fixes & Improvements

• Fixes to a stale connections issue. Added a mechanism to determine if there is a stale connection and to terminate it.