clean up term width detection and remove spurious warnings Checking the terminal width is done in a number of places, including in tests. Outputting warnings whenever one of those routines is used on something that isn't a terminal adds noise to tests and isn't helpful. Eliminate the warnings for when using COLUMNS or falling back to 80. Maintain the warning for when Term::Size::Any is not available. We could also just add Term::Size::Any as a prerequisite.
Change behaviour for terminal width detection Sometimes Term::Size::Any is installed but can return a width of undef. This causes the eval to succeed but then it falls back to using 80 characters. This change allows it to look at $ENV{COLUMNS} for a hint if the width isn't defined or if the eval fails due to a missing module instead of just if the eval returns an error.