Gerowen - 2020-11-14

This is mainly just a maintenance update.

14 November 2020
Marcus Dean Adams (gerowen@pm.me)
- Updated youtube-dl to v2020.11.12
- Removed variables that changed path to images depending on whether installed or not.
Images will always be referred to using a relative path now, since I'm no longer using
the home-made install script and we know that the images should always exist in the
same directory as the executable.
- Corrected the "contact me" dialog with my correct e-mail address.
- Added a "DONATE" section to the Readme with links to donate to me.
- Fixed some spacing issues with the import error messages.
- Clarified and updated a few things in the Readme.