Pack Trailer v3.5

Hi, I updated the trailers from scratch, adding new defs. now the mod is much lighter and well optimized. has bulk trailers and chests. has several types of animated loads.

please keep the original link, because of the work to make a mod with that quality. if it were easy all of you would be doing.
thank you all. if you find any mistake just comment.
It is compatible in versions 1.34x and 1.35 (open beta)