v0.5

Various cleanups and getting ready to add to HACS officially. Thanks to @firstof9 for many code quality improvements and bug fixes!

New features include:

• Addition of RGB team colors (team_colors_rbg and opponent_colors_rbg) for easier use with light entities. Thanks @firstof9 for the enhancement!
• Correction of the readme for HACS rendering purposes (issue #25). Thanks @gonzotek!