Check if playlist is empty before playing, Fix #48

Update readme

Skip sending sounds to players with volume = 0, Fix #27

Add API to asynchronously load and add songs to a playlist

Make sure playlists in shuffle mode don't start with the same song

Add plugin reason for PlaylistEvent

Added playlist events

Add playlists

Merge pull request #44 from inxomnyaa/pm5

Fix lints

Update libnbs (changed author name)

Update to PM5 & Add subcommands

require formapi and commando

update yml files

Merge pull request #31 from jaylac2000/master