Added support to Minecraft versions 1.8, 1.9, 1.10, 1.11 and 1.12
Due to changes to Bukkit API in 1.9, the plugin doesn't support particle effects in 1.8.x versions
Added response when setting sound via command
Reverted changes to error messages only showing in console and instead they now are sent to the player stepping onto the pressure plate should any error occur