v0.2.1

Many improvements to overlay(the peer networking code)
Better feedback about what is happening during catchup
ability to give nodes a common name in the .cfg

v0.2

• Fixed crashes in history import with slow archives
• Improved robustness of history subsystem
• Improved robustness of overlay
• Exchange SCP messages when connecting to a new peer
• Persist latest SCP messages before sending them
• log SCP state before asserting if due to SCP
• Validate quorum sets on startup and when receiving messages
• move to hello2 to allow smoother upgrades in the future
• version the DB schema

Live Network

Merge pull request #808 from graydon/auth-all-the-messages

Put all messages in AuthenticatedMessage

Reviewed-by: MonsieurNicolas