Implemented trapped chests & others

+ Added trapped chests
* Fixed a bunch of bugs in the redstone simulator concerning wires and
repeaters
* Other potential bugfixes

I hereby present to xoft, ONE METRIC TON PRECISELY -----------------
-------------------------------  of code to review.

With thanks.
I didn't quite understand 'this method that called the helper' but that sounds like complicated code that I may or may not be able to write so that it doesn't contain numerous bugs... :P

It's not problematic if it functions well!