Pre-Release: 0.3

Added support for Bazelbuild.

Pre-Release: 0.2

Implemented persistent flags

So far it was not possible to properly use persistent flags in the class
DSL since it is not possible to simply access the class members of the
parent commands.

This was solved by supplying a `Lookup` function that will return the
value of all persistent flags.

Additional changes:
 - [ ] updated Readme
 - [ ] fixed printing of flags; persistent flags are now properly
   printed

Pre-Release: 0.1

This is a (first) complete implementation of the important features of the CLI parser.