• Rework of interfaces

This release introduces breaking changes in some go-micro interfaces

• Move misc to util package
• Add register ttl and interval flags
• Fix protoc-gen-micro example

• Add consul TCP check
• Atomic increment rpc stream sequence

• Support consul services without version
• Switch to stdlib context

• Add WatchOption which allows filtering by service
• Add Options method to registry
• Add Conflict error
• Only watch selected services in cache

• https support for consul registry
• subscriber deadlock bug fix
• selector top level option for service