qView 0.5

Changelog:

• Added zoom limit (don't worry, it's far)
• Finally fixed poor scaling appearance with new scaling algorithm
• Added update checking on about page
• Fixed border being shown around images at 100% zoom
• Removed cursor option due to being confusing and pointless
• Fixed image disappearing after first zoom
• Fixed text on color selection button
• Added show in explorer/finder button
• Added option to disable bilinear filtering
• Added option to disable new scaling algorithm
• Fixed program behavior and icons on Linux
• Restyled about dialog including mac-specific font sizes