Don't need to register controllers manually

[alex-fedorov]

You can define inherited hook on base controller. Example:

http://play.crystal-lang.org/#/r/7kn

all the hooks can be found in this spec: https://github.com/manastech/crystal/blob/119ccc89065165bc937b3417e5ac2af2bab6e056/spec/compiler/codegen/hooks_spec.cr

[sdogruyol]

Wow that's pretty neat 👍