Project 2.5:
- Added "~/bin/data/img/tags" directory.
- Added tag files for each test image.
- Encapsulated File I/O into ImageList class.
- Removed File sorting.
- Image tags are read into memory from tag files when images are loaded.
- Image tags are displayed below the image.
- TextField is displayed above zoomed image.
- Entering text into TextField updates image tags. Tags persist even when an image is no longer seleced.
- TODO: implement button for saving tags.