v0.8.6.2

• Automatic Checkpointing - Protection against 51% attacks.
• Graphical updates to the wallet.
• Acceptable time difference on mined blocks reduced to 15 minutes from 2 hours.
• Reduced influence of nodes on blockchain time to 11 minutes down from 35 minutes.
• Added DNS seed nodes to increase reliability of finding other nodes.
• Miscellaneous bug fixes and updated translations.