WLED beta version 0.13.0-b0

Welcome to WLED 0.13.0-b0 "Toki"!

Time is the most valuable thing in the world. So let's use it right!

This version's highlights are

• Playlist editor in the web UI
• Location based sunset/sunrise timers
• Added support for custom usermode settings
• Multi button and switch support
• New segment offset setting
• Added /json/cfg to allow changing settings
• Logo readability improved
• More accurate NTP syncronization
• Various fixes and improvements

Thank you to @blazoncek for adding a lot of these features!

See the changelog for a complete list of changes!

What binary should I use?