New default config and improvements (bugged)

Additions & Improvements

• items and popups can now have their own blur_radius (#201)
• app icons can be displayed for all images by supplying app.<bundle-id> as an image (#204)
• Space components now automatically associate and reassociate their display when no associated_display is set, always showing the space item on the correct display
• New minimal default config

Fixes

• Occasional white flickering fixed (#207)
• Fixed associated_display property not applying instantaneously (#206)

Full Changelog: v2.7.1...v2.7.2