Fix a bugs!

• YTDL doesn't play songs, version is deprecated.

New features!

• Randomly songs of playing playlist
• Repeating songs

Fix bugs in player

• Fix bug on request video by ytdl-core version contains bug 404
• Fix bug on finish song play another song reseting volume

Update player and fix bugs

• Fix player bugs in playlists
• Improved the player controller

First stable release

• Feature Discord RPC
• Create playlist
• Play music
• Simple player
• Download playlist

First version

This is the first version of the application, with the essential features.