This moves a lot of machinery for commands into a context.Context with other struct values. This allows for PreRunE's to reliably load the configuration and avoids use of global vars.
This adds experimental file filters which are not guaranteed under our stability policies. These filters take effect after reading the files and before parsing their content.
This improves all random character generator command usages to be nearly identical and reuse a large block of code. It also improves several functions to give more options when randomly generating outputs.
James Elliott