0.2.0

1. When a background fill color is selected, a 'Remove' button is shown next to it which allows you to make the background fill transparent. This is good for PNGs.
2. When you click the Affix button, the dialog with downsizing options now has output format options.
3. I'm looking into why images downsized a lot have slightly reduced quality.
4. When you select multiple images using drag selection (like Google Photos), and click "Affix", the photos will be in order of position.