Bumped version number to v0.2.8
Removed the TODO stub from the main Form

This was done beucase I already have a method of checking if FFmpeg is
installed and I didn't want to see a command prompt flash whenever the
program was opened.
Added preliminary Ultra quality settings

This was the first stage, which generally makes 2.99MB files, instead of
2.92MB. Minor gains, but every little bit counts.
Added a loop for Ultra quality

The loop implemented attempts to lower the bitrate until the targeted size
is met. It will run 10 times or until the target size is met. If it goes past 10
passes, it will give the user an error message with recommendations.