Small Explosive Spawner

This mod adds a small explosive tank spawner. It works just as the Explosive Spawner from Challenge Parts Mod, but obviously spawns the smaller tank and also:

• the part is black by default
• the tank can be spawned only if the previous one is moved outside of 2-block radius to prevent a new tank spawning on the previous one and blowing your contraption up
• the tank is spawned a bit above the spawner surface, so the spawner can be hidden under one row of blocks, and the explosive will spawn above them
• the spawned tank can be lifted and deleted

Timing info: The button has to be constantly pressed for 10 ticks to try to spawn an explosive; after the spawning, there is 25 tick delay time, so a switch will spawn an explosive every 35 ticks. If the explosive can't spawn, it sends a console message.