Retracting/vectoring engines, Critter Crawler

There have been many requests over the years to get the Critter Crawler working again.

Your requests have now been answered.

Together with @Starwaster, the Critter Crawler is crawling out of the woodwork again.

This includes the following parts:

• XJ-48k Vector - 1.25m powerful turbojet with thrust vectoring.
• Critter Crawler - hexapod rover body built to be able to go places that wheeled rovers can not.
• MJ-88 Mini Vector - 0.625m  turbojet with an advanced thrust vectoring system.
• R-RCS-B5 Retractable RCS Block (Flat) - Flat retracting RCS block 
• VTx-202 Retractable Engine - A retractable dual nozzle, liquid fuel and oxidizer powered rocket engine.
• ILX-40 Retractable Engine - a small Retractable rocket engine
• ICU-360 Spotlight Turret - A spotlight which follows the mouse
• TRR-1 Tiny Retractable Radial Engine Cluster