Freezer now accepts pipe connections from all sides, thanks to improved
pipe detection logic in functions.lua. Function that checks if an element
belongs to an array has been made public to all module files, module
has been rewritten to utilize this function instead of duplicating
code.
What's left: textures, crafting.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
