Add send_endpoints
Add overlay timer for autoconnect
Move autoconnect to overlay
Move timer to overlay
Remove unused connect callback
Add sendpeers function to replace send callback
Change connected to return a bool
Remove disconnect callback
Remove Callback
Remove SiteFiles injection from PeerFinder
Move CheckerImp to header
Don't dispatch calls to Logic
Use shared io_service in CheckerImp
Simplify CheckerImp
Template Logic on Checker
Flatten Checker class hierarchy
Replace Result with error_code
Further simplify Checker and de-inline members