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Resized window.
Added categories feature :
- New "Add New Category" button to add categories
- New category boxes for arranging tasks
- New drop-down/collapse button and remove button for categories
- Drag and drop feature for tasks
Added new text bubble dialogue for finishing all tasks in a category.
Drag and drop existing tasks inside a category box to move it inside. Drag it and drop into another category box to move it into another category or drop it outside any categories to move it outside. Tasks can be dropped into categories even when category box is collapsed. Deleting a category will shift all of the children tasks outside.