Extension for Thunderbird that lets the user customize how dates are formatted when they're displayed.
This extension is substantially based on Super Date Format by Yonas Yanfa.
(c) 2019 by Jeremy Gillula under the Mozilla Public License, except for the strftime function in src/chrome/content/enhancedDateFormatter.js, which is taken from https://github.com/thdoan/strftime and is (c) 2016 by Tom Doan, and used here under the MIT Public License.