correctly identify when format is csv

src/formatters.rs

@@ -36,6 +36,7 @@ impl Formatter {
             Formatter::Text => text::print_formatted(entries, out, now, ids, term_width)?,
             Formatter::Csv => csv::print_formatted(entries, out, ids)?,
             Formatter::Custom(name) => {
+                panic!("attempted custom formatter with name {} which is not implemented", name);
             }
         }
 
@@ -51,6 +52,7 @@ impl FromStr for Formatter {
 
         Ok(match &*lower {
             "text" => Formatter::Text,
+            "csv" => Formatter::Csv,
             custom_format => Formatter::Custom(custom_format.into()),
         })
     }