Command line framework for making simple and complex command line
applications.

- Easily create stand alone commands or nested groups of commands
- Define and connect commands with class objects
- Inherit and create viewsets of commands to be able to reuse large
  nested groups in other cli applications
- Use mixin commands to quickly add pre defined commands to your cli
- Groups of commands can be found from any class that has defined a
  cloc.core.BaseCmd
