Simple Copper Pipes

Time for another update! What's new? Copper Pipes have a revised "shooting" behavior:

-Copper Pipes with Dispensers behind them will shoot items farther depending on their oxidization state.

-Copper Pipes with droppers behind them will shoot items out at a medium range, regardless of oxidization.

-Copper Pipes that are being powered by redstone can now "throw" items like dispensers- it can shoot arrows and potions now.

Oxidization has also been tweaked to now match normal copper's oxidization speed better.

Waxed Copper Pipes will now transport items faster than unwaxed pipes. Waxed Copper Pipes can now be crafted.

Fixed a crash from the last update.