v6

Fixed

• Support for etcd v0 and v2
• Panic from invalid skydns2 URI.

Added

• Optional periodic resyncing of services from containers
• More error logging for registries
• Support for services on containers with --net=host
• Added extensions.go file for adding/disabling components
• Interpolate SERVICE_PORT and SERVICE_IP in SERVICE_X_CHECK_SCRIPT
• Ability to force IP for a service in Consul
• Implemented initial ping for every service registry
• Option to only deregister containers cleanly shutdown #113
• Added support for label metadata along with environment variables

Changed

• Overall refactoring and cleanup
• Decoupled registries into subpackages using extpoints
• Replaced check-http script with Consul's native HTTP checks