Fix references
Protect RecentsEvents from multithreaded access
Prefer a ConcurrentDictionary over a plain Dictionary
Copy config.sample to output directory
Wait for complete intialization
Silently disregard remote tags for now
Minor renamings
Introduce NullIdentity type

 - Used when the identity cannot be inferred from the action
Retrieve identity from topmost commit
Minor refactoring
Build Event.Content from BranchEvent

 - Remove now useless Event properties
 - Make ConsoleNotification format the message differently whether the identity is known or not
Improve retrieval of commits on created branches
Merge pull request #4 from ethomson/ntk/fixups

Some fixups