botify 1.6.2.1

improve concurrent command handling and other improvements

• create abort command to interrupt current commands and cancel
  queued commands
• commands can now be set to ignore the queue and run even if the
  queue is full
  • applied to admin commands and the new abort command
• widgets execution threads now do not get added to the queue but
  always run
• add size limit to AudioQueue
• adjust add command to only use the invoke method when needed and not
  put the entire command into an invoke call so that several add
  commands entered by the same guild can load tracks at the same time
  but not alter the playlist at the same time