Partial recode of the plugin to make it consume less server resources.
Added tab completion for player names in /spawn (Useful for /spawn <player>)
Added %prefix% placeholder
Permission spawn.* works to give all spawn commands.
Fully configurable countdown sound according to countdown seconds (Pitch per second & final second are able to configure to your own style with any sound)
Added a sound configurable sound when teleportation cancels due to movement (Enable/Disable)