* add ability to specify deprecated or retired options.
* add retired example and tests
* update some formatting and a few more test executions
* fix formatting on retired.cpp
* add another test to fill coverage gap for existing options that are being retired.
* add example comments
* Update readme with the descriptions of the new helper functions
* fix space on readme
* Apply suggestions from code review
Co-Authored-By: Christoph Bachhuber <cbachhuber89@gmail.com>
* add some flags to the code coverage report and update some names and add more descriptions to deprecated options
* update formatting on App
