v1.5.0

This release is largely to fix issues affecting the usability of Radiant Player. However, the largest piece of news is that development of Radiant Player has been moved into an organization on GitHub, and a few collaborators have been brought on board in order to help develop Radiant Player and fix outstanding issues. Thank you to everyone who pushed for this! I'm sorry for the incredible delay between versions and addressing major issues, but hopefully this will be less of concern going forward with the new organization.

Changed

• Use the Sparkle update framework for more intuitive and user-friendly update process

Fixed

• Fix broken styling in Black theme (thanks @shawn-mitch)
• Fix broken media keys by catching up to Google update
• Fix broken Last.fm scrobbling in OS X 10.11 El Capitan (thanks @chrismou)