This Source Code Form is subject to the terms of the Mozilla Public License,
v.2.0. If a copy of the MPL was not distributed with this file, You can obtain
one at http://mozilla.org/MPL/2.0/.
Handles console logging in pretty colors.
The module disables colors when stdout and stderr isn't a TTY that support
colors. This is to avoid ASCII escape sequences in piped output.
Credit goes to the developers of Dub. A significant part of the color handling
is copied from that project.