Better support for explosions!
- define a list of block IDs that will be destroyed on an explosion event
- explosions enabled on TSL for testing purposes

//TODO
- have separate lists of explodeable blocks per map
- have spawn points for TNT blocks to be generated (this could be at start of game, or during at a set time/kill amount etc)
- method to ignite tnt without having to place power source. Interact with redstone torch in hand maybe?