Added

• This CHANGELOG file to document project changes.
• Added icons created by @Ann0ying
• Ability to sort data by column.
• Added a "Last Modified" column.
• "View file" icon in the downloads window now opens location in Finder.

Changed

• Changed appicons to the new icons created by @Ann0ying
• Incorrect date formatter was being used in NPSBase, resulting in nil last_modification_date
• CoreDataIO wasn't storing PSP and PSX fetch data