Cobra is a commander providing a simple interface to create powerful modern
CLI interfaces similar to git & go tools.
In addition to providing an interface, Cobra simultaneously provides
a controller to organize your application code.
Inspired by go, go-Commander, gh and subcommand, Cobra improves on these
by providing fully posix compliant flags (including short & long versions),
nesting commands, and the ability to define your own help and usage
for any or all commands.
