RoadMap

This initial road map just gives high points of the stages of planned development.

1. Capture list of supported tags for the installed version of exiftool.
2. Generate a rough GUI for display only of the tags.
3. For selected file, populate the read-only gui.
4. Generate GUI for writable tags.
5. Add ability to call exiftool to set those values.
6. Add ability to store/load a set of settings for the above.