should allow full-width display option

there should be 2 modes of display

1. the current view
2. the same display but spread out over the full width of the terminal (`$COLUMNS`)

I'm thinking we specify an option that says "hey make it as wide as you can" (`$COLUMNS`) and optionally specify a max width

Maybe `days_progress --wide` and/or `days_progress --wide --max-width XX`

the `max-width` option would make it spread across the specified width, or the terminal width, whichever is smaller.

Start at the days_progress command entry point and inspect how display options and terminal width are currently handled. Done means the existing view remains available, --wide uses $COLUMNS, and an optional --max-width caps the selected width.

Written by the indexing model from the issue text.