* Made manifolds instancing compatible with maploader
* Fixed the runtime which happenend when a pipe was destroyed but not the meter connected to it
Freezers, heaters and cryo cells now use the new construction system
* Fixed runtimes at init with the previous construction method for freezers, heaters and cryo cells
* Made engineers less clumsy when rotating machinery (turn at 90° instead of a random direction)
Merge pull request #6523 from Menshin/various_atmos_fixes

Various atmos fixes