Just the tags tag:router and tag:exit are owned by alice. Upon join,
those nodes will have their ownership transferred from alice to the
system user "tagged-devices".
* Add documentation for routes
* Rename exit-node to routes and add redirects
* Add a new section on subnet routers
* Extend the existing exit-node documentation
* Describe auto approvers for subnet routers and exit nodes
* Provide ACL examples for subnet routers and exit nodes
* Describe HA and its current limitations
* Add a troubleshooting section with IP forwarding
* Update features page for 0.26
Add auto approvers and link to our documentation if available.
* Prefer the console lexer when commandline and output mixed
